FAIRBANKS - Alaska Lt. Gov. Byron Mallott resigned abruptly Tuesday after acknowledging he had made "inappropriate comments" to a woman. His resignation adds uncertainty to an already complicated re-election bid for Gov. Bill Walker.

Mallott made "inappropriate comments that do not reflect the sterling level of behavior required in his role as lieutenant governor," Walker said in a statement. "Byron has taken full responsibility for his actions and has resigned. As leaders, we must hold ourselves to the highest standards of conduct."