Indonesian officials say at least 70 people were killed when a military transport plane crashed into a residential neighborhood on the island of Sumatra.

An Air Force spokesman, Rear Marshal Dwi Badarmanto, said approximately 30 of the dead have been identified as members of the Indonesian Air Force and their families.

The Hercules C-130 was trying to return to the airport after takeoff Tuesday when it slammed into a hotel and two houses in Medan, Indonesia's third-largest city.

A military spokesman said the four-engine turboprop aircraft went down minutes after taking off from the nearby airport. Air Force chief Air Marshal Agus Supriatna said the pilot told the control tower that the plane needed to turn back because of engine trouble.

"The plane crashed while it was turning right to return to the airport,'' he said. He added that it appears there were no survivors.

Officials have said as many as 113 people were on board the military plane. It is not clear how many people on the ground were killed or injured by the crash.