Sources: US drone strike kills 4 Qaida militants in Yemen

SANAA - A US drone killed four suspected al-Qaida militants on Monday in a strike in central Yemen, tribal sources said, in the third such attack in three days.
The United States never comments on strikes by its pilotless aircraft, which it has used to track down militants in Yemen for years. The Yemeni government tolerates such strikes but usually does not comment on the US role in specific incidents.
Washington has scaled up action against al-Qaida in the strategically important state, where the group exploited widespread anti-government unrest in 2011 to seize swathes of territory in the south.
It was subsequently driven out by a military offensive in June last year.
Yemen's defense ministry said in a statement the air strike targeted a vehicle being used by militants in al-Ateef in the central province of Maarib, killing four fighters. It did not say who was responsible.