NEW VIDEO: Lane Garrison Speaks Out About His Prison "Break"

He got a real prison "break" when his lawyer engineered a deal that sprung him from jail because of good behavior credits earned.

Now, RadarOnline.com can report that actor Lane Garrison -- who once starred in the FOX drama Prison Break -- checked into the Tarzana Treatment Center Wednesday, only hours after his release from prison.

Garrison -- who was sentenced to three years and four months in prison for a deadly drunken driving accident --  was granted early parole after spending only a year and a half at the California Correctional Institution in Tehachapi California.

Garrison served the time after pleading guilty to a series of charges -- including vehicular manslaughter -- after a December 2006 accident in which he rammed his Land Rover into a tree, killing a 17-year-old Beverly Hills High student and injuring two teenage girls.

Garrison was legally drunk at the time of the accident, and had given alcohol to the minors.

He participated in a substance abuse program while in prison, and will continue treatment now that he's been released.

Garrison -- who was ordered to serve four years' parole -- has been ordered to pay about $300,000 in restitution to the victims and families.

A source close to Garrison tell RadarOnline.com that if the Prison Break star successfully completes in-patient rehab,  his parole time will be cut in half.

(Video: Pacific Coast News)

(Photo: Ginsburg / Spaly)