PESHAWAR: At least four people were killed and three others injured in a US drone attack in the North Waziristan tribal region, security sources said.

Sources said the drone fired missiles targeting a vehicle in the Loman area of Dattakhel Tehsil. Today's strike is the fifth consecutive drone attack in the last five days, as the US-led drone campaign targets suspected militants and their hideouts in restive North and South Waziristan.

North Waziristan is among Pakistan’s seven tribal districts near the Afghan border which are rife with insurgents and are alleged to be strongholds of Taliban and Al Qaeda operatives, among others.

Pakistan's military in mid-June had launched an all-out operation, named 'Zarb-i-Azb', against Taliban militants in the region which is still under way.

Drone attacks are widely unpopular across Pakistan and according to survey conducted in June this year, 66 per cent of the country's citizens oppose these strikes.