PHILADELPHIA (WPVI) -- A construction worker is dead following an apparent altercation Wednesday afternoon in Philadelphia's Roxborough neighborhood.
The incident happened around 2:30 p.m. in the 400 block of Ripka Street.
According to investigators, the worker became involved in an argument with a resident. Police said the worker was later seen walking outside before collapsing on the sidewalk.
Authorities said the 19-year-old victim suffered a chest injury and was pronounced dead.

Investigators are working to determine whether the fatal injury may have been caused by a nail gun or a rifle, according to police.
The resident involved in the dispute is being questioned by officers.
Police have not released additional details about the circumstances surrounding the incident.
Anyone with information is asked to call 215-686-TIPS.