A US drone struck a vehicle in Yemen's eastern province of Marib overnight killing three Al-Qaeda suspects, a military source said on Friday.

"A vehicle was hit by a missile fired from an American drone. It was totally destroyed and the three people inside, Al-Qaeda militants, were killed," the source told AFP.

The attack took place near a military position in the Obeida valley, east of the city of Marib and away from residential areas, the source said.