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A Broadview man faces a murder charge in connection to a fatal stabbing earlier this week aboard a CTA Blue Line train, Chicago police announced Friday.

Lawrence Strother, 66, faces a single count of first-degree murder tied to an attack that occurred on the Rosemont branch of the Blue Line aboard a train near the 5800 block of North River Road Wednesday evening, police said.

Killed was Jason Rowinski, 42, according to the Cook County medical examiner’s office. An autopsy performed on Thursday determined he died of a stab wound to the lower extremity and was ruled a homicide.

Police arrested Strother in the 9500 block of Technology Boulevard in Rosemont several hours after the attack. Authorities didn’t say what they believe sparked the fatal stabbing.

Strother is expected to appear before a judge for a detention hearing on Saturday.