Three people were killed in a helicopter crash in Southern California while filming for a reality-television show Sunday.

The helicopter crashed around 3:40 a.m. PST (6:40 a.m. EST) at the Polsa Rosa Ranch in Acton, the Associated Press reported. Located in rural Los Angeles County, the ranch has been used as a shooting location several times, and it was set to be featured in a planned reality-TV show.

All three men in their 40s aboard the Bell 206B Jet Ranger helicopter died as a result of being thrown from it as it crashed, KTLA 5 in Los Angeles reported. The victims have not been identified as of this writing.

A representative of FilmL.A., a company that processes filming permits for location shoots in the Los Angeles area, told AP that a production company named Bongo Inc. had scheduled the use of the helicopter and ranch for a reality-TV show shoot. 

The permit was secured for an “Untitled Military Project,” with the footage apparently destined for the Discovery Channel, KTLA 5 said.

The chopper sustained heavy damage in the crash, AP said. It was provided by Crossbow Helicopters, which leases helicopters and fixed-wing aircraft to production companies for aerial filming.

No information on a production company called Bongo Inc. appears available online, although the small-business registry lists an L.A.-based firm named Bongo Bongo Bongo Inc. in the casting-directors category of its directory.