Leon Neal / Getty ImagesVisitors look at floral tributes after an evening vigil outside Town Hall on May 23, 2017, in Manchester, England. An explosion occurred at Manchester Arena as concertgoers were leaving an Ariana Grande performance.
Robert Perry / Getty ImagesScottish First Minister Nicola Sturgeon meets with police authorities on May 24, 2017, in Glasgow. Security measures across the United Kingdom have been stepped up after the nation's terror threat level was raised to "critical" in the wake of the Manchester bombing.
Rui Vieira / APA fan leaves a hotel with her parents May 23, 2017, in Manchester, England, a day after a suicide bomber attacked at an Ariana Grande concert at Manchester Arena.
Martin Rickett / APPolice officers on May 23, 2017, add to the flowers for the victims of the previous night's explosion at an Ariana Grande concert in Manchester, England.
Christopher Furlong / Getty ImagesPolice seal off Lindy Road in Manchester as the attack investigation continues on May 25, 2017.
Jeff J Mitchell / Getty ImagesA woman pauses at a memorial in St. Ann Square on May 23, 2017, in Manchester, England, a day after 22 people were killed in a suicide bombing at a pop concert packed with children. It was the worst terror incident on British soil since the London bombings of 2005.
Jeff J Mitchell / Getty ImagesMourners attend a candlelight vigil on May 23, 2017, to honor the victims of the terrorist attack a day earlier at Manchester Arena in England.
Jonathan Brady / APPolice and a bomb disposal unit stand watch unit after an evacuation took place in the Moss Side area of Manchester, England on May 27, 2017.
Leon Neal / Getty ImagesA woman is consoled as she looks at the floral tributes after an evening vigil outside the Town Hall on May 23, 2017, in Manchester, England. An explosion occurred at Manchester Arena as concertgoers were leaving an Ariana Grande performance.
Ben Stansall / AFP/Getty ImagesMessages and floral tributes are seen in Albert Square in Manchester, England, on May 23, 2017, in solidarity with those killed and injured in the previous day's terror attack at an Ariana Grande concert.
Dave Thompson / GettyPeople receive treatment from emergency service staff at Victoria Railway Station close to the Manchester Arena on May 23, 2017, in Manchester, England.
Ben Stansall / AFP/Getty ImagesRetail staff hug each other after being evacuated from the Arndale Centre shopping mall in Manchester, England, on May 23, 2017, following a security alert the day after a deadly terror attack at the Manchester Arena.
Oli Scarff / AFP/Getty ImagesA woman and a young girl, who is wearing a T-shirt of singer Ariana Grande, talk to police May 23, 2017, near Manchester Arena in Manchester, England the day after an explosion at a concert by Grande killed 22 people.
Peter Byrne / APArmed police work after an explosion at the Manchester Arena in Manchester, England Tuesday, May 23, 2017. An explosion struck an Ariana Grande concert attended by thousands of young music fans in northern England late Monday, killing over a dozen people and injuring dozens in what police said Tuesday was being treated as a terrorist attack.
Peter Byrne / APPolice gather at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England, on May 22, 2017. At least 19 people were killed.
Peter Byrne / APPolice stand guard at dawn, after a blast at the Manchester Arena on May 23, 2017.
Justin Tallis / AFP Getty ImagesBritish Army soldiers patrol along Whitehall near Downing Street and the Houses of Parliament in central London on May 24, 2017.
Tim Ireland / APPolice officers patrol outside St. Paul's Cathedral in London on May 24, 2017. Armed troops were at vital locations after the official threat level was raised to its highest point following a suicide bombing that killed 22 people.
Jeff J Mitchell / Getty ImagesPeople pause to look at floral tributes and messages in St. Ann Square on May 24, 2017, in Manchester, England.
Peter Byrne / Getty ImagesQueen Elizabeth II meets medical staff during a visit to the Royal Manchester Children's Hospital on May 25, 2017. The queen visited the hospital to meet victims of the Manchester Arena terror attack and to thank members of staff who treated them.
Peter Byrne / APPolice stand guard at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England, on May 22, 2017.
Peter Byrne / APPolice work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative said the singer was not injured.
Peter Byrne / Getty ImagesQueen Elizabeth II speaks to Amy Barlow, 12, from Rawtenstall, Lancashire, and her mother, Kathy during a visit to the Royal Manchester Children's Hospital on May 25, 2017, to meet victims of the terror attack and to thank members of staff who treated them.
Ben Stansall / AFP/Getty ImagesFloral tributes are left in St. Ann's Square in Manchester, England, on May 23, 2017, for those killed and injured in a terror attack at the Ariana Grande concert the previous night.
Christopher Furlong / Getty ImagesMembers of the Manchester Dawoodi Bohra Muslim community pay their respects to victims of the Manchester Arena attack in St. Ann's Square on May 24, 2017.
Paul Ellis / AFP/Getty ImagesPolice forensic officers on May 23, 2017, walk along a bridge linking Victoria station to the Manchester Arena, scene of a terror attack during a pop concert by singer Ariana Grande.
Christopher Furlong / Getty ImagesResidents of Lindum Street in Manchester observe a nationwide minute of silence while holding the jerseys of both famed Manchester soccer teams, Manchester City and Manchester United, in memory of the victims of the bomb attack on May 25, 2017.
Peter Byrne / APEmergency services personnel speak to people outside Manchester Arena in England after reports of an explosion at the venue May 22, 2017.
Jeff J. Mitchell / Getty ImagesManchester resident Gulnar Bano Kham Ghadri wears a British flag headscarf during a vigil by multicultural religious leaders in St. Ann's Square on May 24, 2017.
Rui Vieira / APPolice block a road near to the Manchester Arena in Manchester, England, on May 23, 2017. An explosion struck an Ariana Grande concert attended by thousands of young music fans the previous night.
Jeff J Mitchell / Getty ImagesManchester City Council workers move the floral tributes from Albert Square to St. Ann's Square on May 24, 2017, in Manchester, England.
Victoria Jones / APPeople attend a vigil in Trafalgar Square in London on May 23, 2017, for the victims of an attack that killed 22 people at a concert in Manchester the previous day.
Joe Giddens / APPolice officers work at a residential property on Elsmore Road in Manchester, England, on May 24, 2017, continuing their investigation into the terror attack at the Manchester Arena.
Emilio Morenatti / APPeople cry after a vigil in Albert Square in Manchester, England, on May 23, 2017, the day after a suicide attack at an Ariana Grande concert that left 22 people dead.
APPolice and other emergency services are seen near the Manchester Arena after reports of an explosion May 22, 2017.
Oli Scarff / AFP/Getty ImagesPolice officers work at a residential property on Elsmore Road in Manchester, England, on May 24, 2017, continuing their investigation into the terror attack at the Manchester Arena.
Peter Byrne / APArmed police respond after reports of an explosion at Manchester Arena during an Ariana Grande concert in Manchester, England, Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at the concert in northern England, police said. A representative said the singer was not injured.
Tim Ireland / APPeople have their bags searched outside St Paul's Cathedral in London on May 24, 2017, ahead of a service to mark the 100th anniversary of the Order of the British Empire. Amed troops were at vital locations after the official threat level was raised following a suicide bombing in Manchester that killed 22 people.
Christopher Furlong / Getty ImagesA man pauses as he looks at floral tributes and messages in St. Ann's Square on May 24, 2017, in Manchester, England.
Christopher Furlong / Getty ImagesPeople embrace in St. Ann's Square during a vigil for the Manchester Arena attack victims on May 24, 2017.
Emilio Morenatti / APA British flag is seen next to flowers after a vigil in Albert Square in Manchester, England, on May 23, 2017, the day after a suicide attack at an Ariana Grande concert left 22 people dead.
Emilio Morenatti / APA woman stands May 24, 2017, near a memorial for the victims of the terror attack in Manchester, England.
Christopher Furlong / Getty ImagesPolice escort members of the public from the Manchester Arena on May 23, 2017, in Manchester, England.
Kirsty Wigglesworth / APPolice patrol May 24, 2017, near Victoria Station in Manchester, England. Armed troops were at vital locations after the official threat level was raised to its highest point following a suicide bombing that killed 22 people.
Christopher Furlong / Getty ImagesPink balloons are released into the sky above tributes in St. Ann's Square on May 24, 2017, in Manchester.
Peter Byrne / APEmergency services work at Manchester Arena after reports of an explosion during an Ariana Grande concert.
Tim Ireland / APPeople have their bags searched outside St. Paul's Cathedral in London on May 24, 2017, ahead of a service to mark the 100th anniversary of the Order of the British Empire. Armed troops were at vital locations after the official threat level was raised to its highest point following a suicide bombing that killed 22 people.
Christopher Furlong / Getty ImagesPeolple bring flowers to St. Ann's Square in Manchester, where a carpet of tributes has been laid on May 24, 2017.
Emilio Morenatti / APA woman lights candles after a vigil in Manchester, England, on May 23, 2017, the day after a suicide attack at an Ariana Grande concert that left 22 people dead.
Daniel Leal-Olivas / AFP/Getty ImagesBritain's Prime Minister Theresa May leaves 10 Downing Street in central London on May 25, 2017. May said she would raise the issue of leaks from a probe into the Manchester terror attack that have infuriated British authorities with their U.S. counterparts ahead of her departure for a NATO summit in Brussels.
Emilio Morenatti / Associated PressNewspapers reporting about the suicide attack at a concert by Ariana Grande that killed more than 20 people are placed in central Manchester on May 24, 2017.
Jeff J Mitchell / Getty ImagesPeople pay their respects to the victims of the Manchester bombing with a nationwide minute of silence in St. Ann's Square on May 25, 2017.
Dave Thompson / Getty ImagesPolice stand by a cordoned-off street close to the Manchester Arena on May 22, 2017, in Manchester, England, after an explosion at an Ariana Grande concert.
Rui Vieira / APA fan is comforted as she leaves a hotel in Manchester, England, on May 23, 2017, the day after an apparent suicide bomber attacked an Ariana Grande concert, killing 22 people.
Jeff J Mitchell / Getty ImagesPeople pause to look at floral tributes and messages in St. Ann's Square on May 24, 2017, in Manchester, England.
APPolice and other emergency services personnel aid a victim of an explosion May 22, 2017, at the Manchester Arena in Manchester, England.
Peter Byrne / APArmed police work at Manchester Arena after reports of an explosion at the venue during an Ariana Grande gig in Manchester, England Monday, May 22, 2017. Several people have died following reports of an explosion Monday night at an Ariana Grande concert in northern England, police said. A representative said the singer was not injured.
Martin Meissner / APManchester United players pause for a minute's silence May 24, 2017, as a tribute to the victims of the Manchester bombing, before the UEFA Europa League final against Ajax Amsterdam at the Friends Arena in Stockholm.
Jeff J Mitchell / Getty ImagesA woman makes her way to lay flowers in St. Ann Square in Manchester, England, on May 23, 2017, to honor the victims of the previous night's terror attack.
Danny Lawson / APA police officer with a sniffer dog patrols near the Manchester Arena in Manchester, England, on May 23, 2017. An explosion struck an Ariana Grande concert attended by thousands of young music fans the previous night, killing 22 people.
APHelpers attend to injured people inside the Manchester Arena in Manchester, England, after a blast May 22, 2017.
Angelo Carconi / APThe lights are off at the ancient Colosseum in Rome on May 23, 2017, in tribute to the victims of the terrorist attack in Manchester, England.
Leon Neal / Getty ImagesBritish Prime Minister Theresa May meets Chief Constable of Greater Manchester Police Ian Hopkins on May 23, 2017, in Manchester, the day after a terrorist attack in the city.
Kirsty Wigglesworth / APPeople lay flowers after a vigil in Manchester, England, on May 23, 2017, the day after a suicide attack at an Ariana Grande concert left 22 people dead.
Leon Neal / Getty Images
1 of 64
Visitors look at floral tributes after an evening vigil outside Town Hall on May 23, 2017, in Manchester, England. An explosion occurred at Manchester Arena as concertgoers were leaving an Ariana Grande performance.
ExpandPUBLISHED: | UPDATED:
Getting your Trinity Audio player ready...
A highly anticipated night for Ariana Grande fans ended in blood and terror after an explosion tore through the foyer of the Manchester Arena.
At least 19 concertgoers were killed and about 50 others were injured Monday night.
Shaun Hunter was with his daughters — Eva, 10, and Ruby, 12 — all wearing kitten ears like the star of the show when the house lights went on. He called the rush of concertgoers after the explosion “a stampede.”
“I saw one bloke carrying his daughter. She was bleeding,” Hunter told The Times of London.
Police said they were treating the incident as terrorism.
Grande, who had just left the stage, was unhurt.
More Top Picks Best Air Purifiers For Asthma
Social media carried messages from families concerned about missing loved ones.
Ellie Ward, 17, made his way out of the arena after the blast, and found his 64-year-old grandfather, who had been waiting for him when the explosion happened.
“He said he only realized what had happened when he felt the side of his head and it was bleeding,” the younger Ward told The Guardian newspaper.
“He’s OK but he’s cut his cheek,” she said. “They said he had severed an artery. A lot of glass shattered on him.”
“Everyone was screaming and running,” Robert Tempkin, 22, told The Times. “There were coats and people’s phones on the floor. People just dropped everything.”
Elena Semino and her husband were waiting by the arena ticket office for her daughter when the explosion went off.
“My husband and I were standing against the wall, luckily, and all of a sudden there was this thing,” she told The Guardian. “I can’t even describe it. There was this heat on my neck and when I looked up there were bodies everywhere.”
Despite wounds to her neck and a leg, Semino dashed into the auditorium in search of her daughter while her husband, who had only a minor injury, stayed behind to help an injured woman. She found her daughter Natalie, 17, and her friends safe.