An 18-year-old man from Delaware County was shot and killed by police after hitting two Pennsylvania State Police troopers on Interstate 95 near Penn's Landing overnight.

Anthony Allegrini Jr., of Glen Mills, was pronounced dead on the scene by Philadelphia Fire Department Medics. The troopers suffered minor injuries, police said.

Authorities said Sunday two troopers were struck around 3:30 a.m. when Allegrini's vehicle failed to yield when police found a large group of cars blocking the busy highway when they responded to reports of street racing. One trooper discharged his service pistol and struck Allegrini, state police said in a news release.

Upon arrival of I-95, troopers "found a significant number of vehicles illegally blocking the roadway, with others doing “burnouts” and “drifting”, and numerous pedestrians outside of their vehicles spectating." Authorities were also aware of reports of shoots being fired before they arrived to I-95.

Earlier in the evening, the state police were also called to assist with street racing in the city.

The Philadelphia District Attorney's Office and the state police are investigating.

The Faternal Order of Police Philadelphia Lodge #5 released a statement Sunday.

"Once again, our great city of Philadelphia was under siege by criminal activity involving illegal street racing .. Another weekend of Philadelphia and state police officers putting themselves in danger to surb this criminal behavior," it read, in part.

The statement said the department remains understaffed "to adequately address the chaos."

This article originally appeared on Bucks County Courier Times: Driver, 18, killed by PA State Police on I-95 after hitting 2 troopers