Islamad, Pakistan (CNN) -- A suspected U.S. drone strike killed four suspected militants in Pakistan's tribal region Friday, two intelligence officials said.

The suspected drone fired two missiles at the militant's vehicle in the village of Khadar Khel, in an area of North Waziristan, one of the seven districts of Pakistan's volatile tribal region bordering Afghanistan, the officials said.

The officials asked not to be named because they were not authorized to talk to the media.

The suspected strike was the 101st this year, compared to 52 in all of 2009, based on a CNN count.

Journalists Nasir Habib and Nasir Dawar contributed to this story