A non-UN sanctioned US drone attack has killed at least four people and wounded several others in Pakistan's troubled northwest tribal belt belt.
Local security officials say the American drone fired two missiles at a vehicle in South Waziristan region, a Press TV correspondent reported.
It has been the second attack in Pakistan by US unmanned planes since last week.
The aerial attacks, initiated by former US President George W. Bush have escalated under President Barack Obama.
US officials say the attacks target militants. However, a majority of the victims of the attacks are civilians.
The issue of civilian casualties has strained relations between Islamabad and Washington.
The Pakistan officials have criticized the air raids, saying they violate the country's sovereignty.
The continued airstrikes have angered the Pakistani people.
They held numerous rallies, condemning the US drone attacks.
The attack comes after Pakistani authorities strongly censured the US for conducting another unauthorized attack in Pakistan that led to the killing of al-Qaeda leader Osama bin Laden.
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