TMZ has learned that Lane Garrison has been moved to the California Institute for Men, the state prison in Chino, Calif., for 90 days. He arrived at 9:51 AM PT.
A judge sent Garrison to the prison for 90 days to undergo a psychological evaluation to determine if he's suitable for probation. A hearing will be held on October 31 that will determine Garrison's fate. He'll either be set free on probation or serve more prison time.
Garrison was drunk and driving on the night of December 2, 2006, when he crashed his Range Rover, killing 17-year-old Vahagn Setian. Two teenage girls in the car were seriously injured.