AceShowbiz - U.S. oil heir Jason Davis has been arrested on suspicion of drug possession, a day after declaring he was clean during a live episode of hit reality show "Celebrity Rehab with Dr. Drew". The grandson of billionaire businessman Marvin Davis was a patient on counselor-to-the-stars Dr. Drew Pinsky's TV treatment show, which saw him receive help fighting his drink and drug demons at the Pasadena Recovery Center last year.

A live reunion episode of "Celebrity Rehab" aired in the U.S. on Wednesday, January 26, when Davis claimed he had managed to stay sober. But he appears to have slipped back into his wild ways and was picked up by cops in Newport Beach, California on Thursday night, January 27.

He is facing a charge of possession of a controlled substance and has been placed on $20,000 bail, reports TMZ.com. And Dr. Pinsky has offered his support to Davis in the hope his arrest will prompt him to return to rehab to conquer his troubles once and for all.

He tells the website, "Jason was honest about his struggles with his sobriety on the reunion show. Hopefully, now that there are legal consequences, further treatment will be mandated, which he so desperately needs. As I said when I saw him Wednesday, we care for him very deeply and we are here for him."