Four people were killed, including a child, when a helicopter crashed into a radio tower in a residential area in Houston on Sunday, according to officials.

Houston officials said a Robinson R44 helicopter was flying from Ellington Airport when it struck a radio tower around 8 p.m. CT on Sunday. The cause of the helicopter crash is being investigated by the National Transportation Safety Board, Federal Aviation Administration and local fire and police officials.

The NTSB confirmed on Monday evening that the four people on board the helicopter were killed. There was a fire after the crash as well, said NTSB air safety investigator Brian Rutt.