Nine people were killed and several others injured in United States drone strike Wednesday in northwest Pakistan's tribal agency, local TV channels reported.

A U.S. drone fired two missiles in North Waziristan tribal area, leaving nine people dead, the private TV Express reported.

A vehicle of the extremists has been targeted by U.S. drone missile in North Waziristan area of Norak, a village on main road in the region, according to GEO News.

It was the fourth drone attack in Waziristan region in two days. In three drone strikes on Tuesday, 19 persons were killed.

Pakistani Prime Minister Syed Yousaf Raza Gilani Wednesday said Pakistan has convinced the United States and the International community that the drone attacks have proved counterproductive and this policy should be reviewed, the private NNI news agency reported.

Talking to newsmen, he said Pakistan is of the view that drone technology should be provided to it so that it could action against the terrorists on credible information.

The U.S. has carried out six drone strikes in North Waziristan this month, killing around 50 people, according to locals.

The U.S. drones regularly hit hideouts of the militants in the Pakistani tribal region, which Washington considers as the center of Taliban and al-Qaeda remnants. Pakistan opposes the U.S. strikes inside the country's tribal regions and seeks the drone technology. But the U.S. does not accept Islamabad's request.

It was reported that the White House is considering using more counter-terror strikes by unmanned spy planes and sending in more special operations forces in Pakistan amid its doubts about adding troops in Afghanistan.