Islamabad, Pakistan (CNN) -- A suspected U.S. drone strike in Pakistan's tribal region killed four alleged militants on Wednesday, intelligence officials told CNN.
Two intelligence officials said the suspected drone fired two missiles on a militant hideout in the area of Mir Ali of North Waziristan, one of the seven districts of Pakistan's volatile tribal region bordering Afghanistan.
The officials asked not to be named because they were not authorized to speak to the media.
According to a CNN count, the Wednesday attack was the fifth suspected drone strike this year. There were 111 suspected strikes in 2010.
The United States does not comment on suspected drone strikes. But it is the only country in the region known to have the ability to launch missiles from drones, which are controlled remotely.
Security analysts have described North Waziristan as a haven for various factions of Afghan and Pakistani Taliban and al Qaeda militants.
From CNN's Nasir Habib