WASHINGTON - (AP) - Sen. Joe Lieberman has decided to retire in 2012.

Democratic officials, who requested anonymity because they werenot authorized to speak publicly, said Tuesday that the independentfrom Connecticut would not seek a fifth term in 2012.

The 68-year-old Lieberman won his fourth term in 2006 as anindependent after losing the Democratic primary to businessman NedLamont, but he continues to side mostly with Senate Democrats.

Connecticut Democrats have been upset with Lieberman since hisappearance at the Republican National Convention in 2008 and hisendorsement of GOP presidential candidate Sen. John McCain.

They've also criticized his strong support of the Iraq war,although they were pleased when he led the fight to repeal the banon gays serving openly in the military.