It could be days — or more — until authorities are able to confirm the number of dead and injured, said Adam Thiel, the city's managing director. As of Saturday morning, officials confirmed seven dead — six on the jet, one person on the ground — and 19 injured.

A person in a car was the seventh fatal victim of the fiery crash of an air ambulance onto a busy Philadelphia street, authorities said Saturday, as investigators sifted through burned cars, damaged homes and charred debris for clues to determine why the aircraft plummeted shortly after takeoff.

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.