Army sergeant sentenced to life in Colo. slaying

photo Sgt. Vincinte Jackson is shielded from cameras as he's led into court Thursday, Dec. 13, 2012 for closing arguments in his court-martial at Fort Carson, Colo. Jackson is charged with premeditated murder in the death of Spc. Spc. Brandy Fonteneaux.

FORT CARSON, Colo. - A weeping Army sergeant on Thursday apologized to the family of a female soldier he admitted killing, after a military panel convicted him of unpremeditated murder and sentenced him to life in prison.

Sgt. Vincinte Jackson said he doesn't know why he killed Spc. Brandy Fonteneaux, 28, of Houston. She was found dead Jan. 8 in her barracks room, stabbed 74 times.