Kiefer Sutherland will be released Monday, most likely in the early morning, L.A.'s Glendale Police tell Usmagazine.com.

He began serving a 48-day sentence in L.A.'s Glendale City Jail on December 5 for his second DUI conviction and for violating probation.

Entertainment Tonight first reported the story

While in jail, he celebrated Christmas, his 41st birthday and was on laundry duty.

He had no visitors during his stay, Glendale Police Department Public Information Officer Agent John S. Balian tells Us, but "there is still a lot of fan mail that comes in."