DETROIT (WWJ/AP) – A man suspected of stabbing a 14-year-old during an argument on a Detroit city bus is now in police custody.

According to police, the teen was able to identify his attacker from a photo lineup. No further information about the suspect has been released.

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The incident happened around 6 p.m. Wednesday as the DDOT bus was stopped near the corner of Dexter Avenue and Lawrence Street on the city’s west side.

“It looks like the victim was trying to break up an argument or intervene between the suspect and another individual,” Deputy Police Chief Rodney Johnson told WWJ after the attack.

The argument apparently spilled onto the street and at some point, the suspect pulled out a knife. Once the teen noticed the weapon, he allegedly ran back onto the bus. The suspect reportedly followed the teen back onto the bus and stabbed him in the chest before fleeing the scene.

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The boy ran from the bus and called 911. He was last reported in critical condition.

Police say the teen was defending himself and punched the suspect in the nose before the stabbing.

An investigation is ongoing.

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