Detectives have obtained a warrant to seize actor Alec Baldwin's cell phone as they search for evidence concerning the fatal shooting of a cinematographer on the movie set of "Rust," which was being filmed in New Mexico in October.

During rehearsing a scene, Baldwin's Colt gun discharged a live bullet, killing Halyna Hutchins.

A search warrant Thursday read "there may be evidence on the phone" that could be "material and relevant to this investigation," citing various text messages and emails sent to and from Baldwin regarding the production of "Rust."

Investigators have not yet filed criminal charges over the tragedy and have refused to rule out charges against anyone involved, including Baldwin.

The warrant said Baldwin had exchanged emails with the film's armorer about the type of gun to be used in the scene.

"He said he requested a bigger gun, and she also showed him different styles of knives for the production," the warrant indicated.

Detectives are gathering information about the "Rust" production going back even before the start of filming.

In his first major TV interview since the shooting, Baldwin earlier this month said he had been told the gun contained no live ammunition, and that he did not pull the trigger.

He stressed that he "would never point a gun at anyone and pull a trigger at them, Never."          

The star mentioned he is cooperating with the investigation and said he had been told "it's highly unlikely that I would be charged with anything criminally."