(CNN) — Five people are dead and dozens are injured after a bus failed to slow down for traffic and struck six cars on Interstate 95 near Quantico, Virginia, early Friday morning, according to Virginia State Police. Traffic was slowing in the southbound lanes of I-95, due to a work zone ahead, when the bus struck the other vehicles around 2:35 a.m. Friday, police said. The five people killed were not on the bus, according to Matt Demlein with Virginia State Police.