PHILADELPHIA (WPVI) -- A dispute about a woman ended with a man shooting his roommate in Philadelphia's Tacony neighborhood.

Police found a 28-year-old shot in the chest outside a home on the 7200 block of Walker Street.

Investigators say two men were fighting over a girlfriend when the victim broke through the rear door of the home after being locked out and confronted the roommate with a knife.

The roommate then allegedly fired shots, hitting the victim, who stumbled outside.

He is hospitalized in critical condition.

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