Islamabad, Pakistan (CNN) -- A suspected U.S. drone strike killed five alleged militants in Pakistan's tribal region bordering Afghanistan on Tuesday, two intelligence officials said.
The suspected drone fired two missiles on a vehicle, carrying suspected militants, in the area of Shawal in North Waziristan, one of the seven districts of Pakistan's volatile tribal region bordering Afghanistan, the officials said.
The officials didn't want to be named as they were not supposed to speak to the media.
North Waziristan is one of seven districts in Pakistan's tribal region along the Afghan border and widely believed to be a haven for the Haqqani network and other militant groups that are fueling the insurgency in Afghanistan.
The United States rarely acknowledges its drone program publicly, although President Barack Obama commented on such strikes in January and Defense Secretary Leon Panetta acknowledged the use of CIA predator drones in the region last year.