Gunmen in Yemen's southeastern Hadramawt province killed two soldiers in an ambush on an army patrol on Monday, a security official said.

"Unknown gunmen fired rocket-propelled grenades at an army vehicle" in the town of Shehr killing both soldiers on board, before fleeing, the source said.

Yemen has seen regular attacks on its security forces usually blamed on the local franchise of Al-Qaeda that remains active in the south and east despite several military operations and US drone strikes against it.