ISLAMABAD, Pakistan (CNN) -- The death toll rose to seven on Friday in an apparent drone attack in northern Pakistan's tribal region, an intelligence source said.
The late Thursday missile attack targeted a home in Danday Darpa Khel, a small village near Miranshah, North Waziristan, said the Pakistani source, who asked not to be identified.
The United States is the only country in the region known to have the ability to launch missiles from drones, which are controlled remotely. U.S. officials normally do not comment on suspected drone strikes, which have caused tension between Pakistan and the United States in the past.
Pakistani and U.S. officials think a drone attack killed the leader of the Pakistani Taliban, Baitullah Mehsud, last month in Waziristan. A new leader was named afterward.
Last month al Qaeda's second-in-command, Ayman al-Zawahiri, called on Pakistanis to back Islamic militants in the tribal areas against what he called an ongoing assault by American "crusaders" and the Pakistani army.
CNN's Reza Sayah contributed to this report.