PHILADELPHIA (AP) — Authorities say a state trooper shot and killed a man whose vehicle struck two troopers as law enforcement tried to get control of an illegal early morning street racing gathering on a Philadelphia interstate. State police say troopers were called to I-95 in the Penn’s Landing area shortly before 3:30 a.m. Sunday where “numerous vehicles and pedestrians” were illegally blocking the highway. One vehicle didn’t stop and struck two troopers, and a trooper shot and killed the 18-year-old driver. State police and the city’s district attorney are investigating. Officials say the street racing gathering was one of several that took place in the city overnight.