Updated

Yemeni army officials say a U.S. drone strike has killed two suspected Al Qaeda militants east of the capital, sparking a retaliatory attack on a military checkpoint.

It's the third suspected U.S. drone strike in less than a week in Yemen.

The officials in Marib province say at least three other militants were wounded in Sunday's strike on a house in Wadi Adeeda that was used to hide weapons. Officials spoke on condition of anonymity in line with regulations.

Yemen's Defense Ministry confirmed a drone strike but didn't specify who was behind it. The U.S. doesn't usually comment on such attacks.

A few hours later, officials say Al Qaeda fighters attacked a military checkpoint in the same area, killing two soldiers. A militant was killed in the shootout