DETROIT (WWJ) – A 14-year-old Detroit boy is clinging to life after police say he was stabbed while trying to break up a fight on a city bus.

Deputy Police Chief Rodney Johnson said the incident happened around 6 p.m. Wednesday as the bus was stopped near the corner of Dexter Avenue and Lawrence Street on the city’s west side.

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“It looks like the victim was trying to break up an argument or intervene between the suspect and another individual,” Johnson said.

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.

The teen, whose name was not released, was rushed to the hospital where he was last reported in critical condition.

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Johnson said it’s not clear what led up to the argument or what compelled the teenager to intervene. Reports say the argument was racial.

“At this time, we do not know if there is a relationship between the victim and either party that was arguing,” he said.

Police are now looking for the suspect, described as a black male with a medium brown complexion in his 40’s or 50’s. He was wearing a black scull cap with a red “D” letter, a green jacket over an orange sweater with a hood and black pants.

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Anyone with information is urged to contact Detroit police at 313-596-5240.