Credit: Everett Collection

Jerry Doyle, an actor best known for starring on Babylon 5, has died, his family confirmed via Twitter Thursday. He was 60.

“The family of Jerry Doyle is sad to announce Jerry’s passing,” the tweet reads. “The cause of death is unknown at this time.”

According to TMZ, the actor was found unresponsive in his Las Vegas home on Wednesday.

Doyle played Michael Garibaldi on Babylon 5, a sci-fi series set in the future. He remained on the show throughout its five-season run from 1994 to 1998, and reprised his role in 1999 TV movie Babylon 5: A Call to Arms.

Following Babylon 5, Doyle went on to appear on television shows like Beverly Hills, 90210, Jag, and NYPD Blue. In 2013, he founded a media platform called EpicTimes, where he hosted a radio show on current events.