Jesse Jackson Jr. Reportedly in Rehab (Updated)

Illinois Democrat Jesse Jackson Jr., who had mysteriously taken a leave of absence from Congress a month ago, is reported to be at a rehabilitation clinic in Arizona. The Free Beacon has the story:

Rep. Jesse Jackson Jr. (D., Ill.) is being treated for alcoholism and addiction in an Arizona rehab facility, Andrea Mitchell reported Wednesday.

Jackson has been on a leave of absence since June 10. His office termed the absence medical and said he was being treated for “physical and emotional ailments,” in a statement last week.

Update: CBS reports that Jackson's doctor says he is recovering from a "mood disorder":

"The Congressman is receiving intensive medical treatment at a residential treatment facility for a mood disorder," a statement from his physician said. "He is responding positively to treatment and is expected to make a full recovery."

The office would not give any further information, including his doctor's name, citing privacy.  

"The name of the attending physician and treatment center will not be disclosed in order to protect his continuing privacy," the statement read.