EXCLUSIVE: There has been an accident on the set of the CBS drama NCIS: Los Angeles during the filming of a key episode, which serves as a backdoor pilot for a planted spinoff series. I’ve learned that a steadicam operator was pinned against something last night, suffering serious injuries. He is currently in the hospital. Production was shut down immediately following the accident. It is resuming today. Written by Shane Brennan, the spinoff episode of NCIS: LA is toplined by Kim Raver and John Corbett.

This is the third major accident on a set of a TV show since the beginning of the year. In January, a stuntman suffered serious head injuries during filming of ABC’s series Castle, with a guest actress also hurt. And two weeks ago, a helicopter pilot, a cameraman and a cast member died in a helicopter crash while filming a new reality TV series for Discovery Channel.