Yemeni security officials say three military officers, including two from a renegade unit, were killed by unknown assailants in the southern city of Taiz.
Friday's attack came days after the vice president announced a security plan calling for militia and military units to withdraw from the streets in an attempt to restore order after months of protests seeking President Ali Abdullah Saleh's ouster.
The security officials said the slain officers from the renegade unit were shot in the center of Taiz. The other officer was shot in his car in a separate incident. The officials spoke on condition of anonymity because they were not authorized to speak to reporters.