Intelligence officials on Friday reported a second suspected US missile attack on the Pakistan side of the Afghan border.
The officials said there were no immediate confirmations of any casualties in the second attack Friday in Gangi Khel in South Waziristan.
An attack earlier Friday killed at least 10 people in North Waziristan. They are the first reported US missile strikes since US President Barack Obama took office.
The officials spoke on condition of anonymity because they were not authorized to release the information.
The United States rarely acknowledges firing the missiles, which are mostly fired from drones believed launched from neighboring Afghanistan.