Federal Aviation Administration officials are investigating the crash of a light plane that landed on the roof of a building in Pomona on Sunday. There were conflicting reports on the number of people aboard the aircraft.
"We believe the pilot was the only person on board," said FAA spokesman Ian Gregor. "He was transported to a hospital."
Gregor said the plane was a single-engine Piper PA-28 and was inbound to Brackett Field airport in LaVerne when the crash occurred.
The crash was reported at 4:42 p.m., and the plane landed on a building at 971 Corporate Center Drive, said Los Angeles County Fire Department spokeswoman Melanie Flores. Two people were walking around the plane when firefighters arrived on the scene, Flores said.
The building houses State of California offices.
Flores said the airport received a Mayday call from the pilot and there were reports of smoke coming from the plane. "He was having some kind of trouble," she said.
The airport is about a 3.5-mile drive from the crash site.
Television coverage showed Los Angeles County firefighters using a ladder to lower a person on a stretcher from the roof to an ambulance.
According to the FAA registry number on the plane, it is registered to Donald Bach and Connie Bach of Fullerton. It was not known whether either of them was aboard the plane.