A small medical jet carrying six people crashed in a Northeast Philadelphia neighborhood Friday evening, officials said, causing an explosion and setting several homes ablaze.

Officials said they could not yet confirm how many people may have died on the ground after the plane slammed into a heavily populated portion of the city.

The crash happened less than 3 miles (4.8 kilometers) from Northeast Philadelphia Airport, which primarily serves business jets and charter flights. Photos taken at the crash site appear to show