Jesse James Enters Rehab

Credit: Jason Merritt/Getty Images

Two weeks after he was accused of cheating on wife Sandra Bullock, Jesse James has checked into rehab.

No official word on what type of rehab he has entered, but reports he is being treated at the Sierra Tucson, in Tucson, Ariz., which specializes in drug, alcohol and sex addiction, as well as other disorders. TMZ reports that it has confirmed with a Sierra Tucson therapist that James, 40, attended a 6 p.m. treatment session Tuesday night.

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The news comes as a fifth woman claims to have had an affair with the owner of West Coast Choppers in Long Beach, Calif.

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Still no official word from Bullock, 45, but a source close to the Oscar winning actress recently told Us Weekly: "Knowing the kind of person she is, I'd be shocked if she contemplated going back to him."

Added Bullock's close friend and longtime costumer Joel Voorhies: James' alleged infidelity "is probably one of the most devastating pieces of information she’s ever gotten."