The Learjet 55 went down just after takeoff, creating what witnesses described as a massive fireball, shaking houses and leaving a chaotic street scene.

Jet Rescue Air Ambulance said it was unlikely anyone on board survived the Friday crash. Nineteen people on the ground were injured, Philadelphia Mayor Cherelle Parker said.

As of Saturday morning, officials said there were seven dead — six on the jet, one person on the ground — and 19 injured. The plane hit the ground just after 6 p.m., during a busy Friday evening dinner hour. Philadelphia Mayor Cherelle Parker said the plane was aloft for a very short period of time before it crashed.