Ryan Leaf moved to state prison

Former NFL quarterback Ryan Leaf is in prison after threatening a staffer and violating his therapeutic plan at a drug treatment center.

Leaf was serving nine months of a five-year sentence at the Nexus Treatment Center after pleading guilty to burglary and criminal possession of dangerous drugs.

Montana Department of Corrections documents released Thursday say Leaf told his roommate he wanted to drag a program staffer by his hair. Leaf also wrote that he wanted to throw the staffer against the wall and smash his glass into the man's head.

Adult Community Corrections Division administrator Pam Bunke writes Leaf was too great a security risk to leave in a community setting.

A disciplinary hearing was held Jan. 9. A hearings officer found him guilty and said Leaf is not right for a therapeutic environment.