The Los Angeles County Fire Department is investigating after two small planes collided mid-air in Lancaster on Sunday afternoon.  A call regarding two downed planes came in at 12:53 p.m., an L.A. County Fire Department spokesperson told KTLA.  County fire officials later confirmed that the planes did collide mid-air. One pilot was killed while the other reported no injuries. One of the planes crash landed on Avenue G near 60th Street East, fire officials said, and CHP confirmed to KTLA that the other aircraft crashed near 47th Street East and Avenue F, which is approximately two miles to the southeast. In an update issued about two hours after the collision, the FAA stated that the two planes involved were two single-engine aircraft: a Nanchang CJ-6 and a Yakovlev Yak-52. The pilots were the only ones in their respective planes, the FAA added. CHP, the Los Angeles County Sheriff's Department and the Los Angeles County Fire Department are at the scene handling the investigation. In addition, the NTSB will also conduct their own probe into the cause of the crash. This is a developing story. Stay with KTLA for updates. Luis Zuñiga contributed to this report.