Alec Baldwin discharged a prop firearm on the set of a movie hes filming in New Mexico, killing one crew member and injuring the director on Thursday, according to local authorities.

The Santa Fe County sheriff said deputies responded to an incident at the Bonanza Creek Ranch movie set shortly before 2 p.m. local time after two people were shot. Officials said it appeared a prop gun was discharged on the set of the film Rust, hitting two people.

The sheriffs office confirmed to multiple news outlets that it was Baldwin, who is producing the film as well as acting in it, who discharged the weapon. Investigators are still working to determine whether the shooting was an accident, according to the Santa Fe New Mexican . A reporter and a photographer at the newspaper reported seeing the actor outside the sheriffs office in tears.