Mike Starr, former bassist for the band Alice in Chains and one of the famous patients on “Celebrity Rehab with Dr. Drew,” has died.

The Associated Press reports that the body of Starr, 44, was discovered Tuesday in his Salt Lake City home. The cause of death has not been determined.

Starr appeared on the third season of VH-1’s “Celebrity Rehab” in an attempt to overcome a drug addiction. For several months, he appeared to have become sober but last month he was arrested in Salt Lake City for possession of a controlled substance.

Pinsky, among many others, expressed condolences on Twitter, writing: “Devastating to hear of Mike Starr succumbing to his illness. Our prayers are with his family.”

Layne Staley, one-time frontman for Alice in Chains, died of a severe drug addiction in 2002. Starr expressed regret in interviews (including the one in the clip above) that he was unable to save Staley’s life.