MIRAMSHAH: Three suspected militants were killed in a US drone strike in Miramshah bazaar in the North Waziristan tribal region late Wednesday night.

Sources said three people were also injured and that the number of casualties was likely to increase.

This is the first drone strike following Prime Minister Nawaz Sharif's visit to the United States and his meeting with US President Barack Obama.

Official intelligence sources said the drone fired two missiles on a compound in the Zafar Town area near Miramshah bazaar, the agency headquarters of the North Waziristan tribal region.

Prime Minister Sharif during his visit to the US last week had called upon President Obama to end drone strikes on Pakistani territory but the US has reportedly made no commitment to end the operation.

US drone strikes in Pakistan and Yemen increased dramatically after Obama took office in 2009, and the pilot-less aerial vehicles became a key part of the fight against Al Qaeda. More recently the number of strikes has lowered.