Jerry Doyle, best known as the star of the 90s sci-fi series “Babylon 5,” has died, according to his official Twitter account. Doyle 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.”

Doyle starred in the 1993 TV movie “Babylon 5: The Gathering” as security officer Michael Garibaldi before becoming a staple in the spin-off TV series. “Babylon 5” kicked off in ’94 and ran a total of five seasons before wrapping in ’98. A year later, he starred in another made-for-TV movie as the same character, “Babylon 5: A Call to Arms.”

Doyle scored his first role on the TV series “Moonlighting,” alongside Bruce Willis and went on to receive credits in other series such as “NYPD Blue,” “JAG,” “Sliders,” “Martial Law” and “Beverly Hills, 90210.”

Aside from acting, Doyle hosted a syndicated radio talk show, the “Jerry Doyle Show,” on Talk Radio Network and he launched his own news platform, EpicTimes, in 2013. He published a book titled “Have You Seen My Country Lately? America’s Wake Up Call” in 2009.

Doyle was also a onetime Republican candidate for California’s 24th congressional district in 2000.

TMZ reported the actor was found unresponsive in his Las Vegas home on Wednesday and that an autopsy is pending.