A small plane crashed near Henderson Executive Airport on Sunday, leaving two people critically hurt and two others with minor injuries.

Authorities say the single-engine Piper PA-28 Cherokee crashed around 1:20 p.m. about 3 miles south of the airport.

A fire ignited after the crash, and the plane is a total loss, said Clark County Department of Aviation spokesman Paul Bobson.

All four occupants were transported to the hospital, city spokeswoman Kathleen Richards said. Two had critical burns, and the other two had injuries that were not life-threatening.

According to Bobson, the aircraft was traveling to Southern California and was not based at the airport.

It was not clear what caused the crash, Federal Aviation Administration spokesman Ian Gregor said. The FAA and the National Transportation Safety Board were investigating.

According to the FAA's online database, the plane is registered to Jody Stuckey, of Virginia Beach, Virginia.