PESHAWAR (Agencies) - An American drone strike destroyed a vehicle in South Waziristan Agency on Tuesday, killing four militants in the second drone attack since the killing of Osama bin Laden, local officials said. A security official said the drones fired two missiles into South Waziristan. Another official said the missiles fell near Angoor Adda village. Two missiles were fired on a vehicle at about 4:15 pm and four militants were killed, the official told AFP on condition of anonymity. The identity of the militants was not immediately known. The last drone strike was on Friday when a salvo of missiles struck a compound in North Waziristan, killing eight suspected militants including Al-Qaeda members, according to officials. US missile attacks doubled last year, with more than 100 drone strikes killing over 670 people, according to an AFP tally, and the CIA has said the covert programme has severely disrupted Al-Qaedas leadership. On Monday, hundreds of Taliban rallied in the main town of South Waziristan, vowing to avenge bin Ladens death after US Navy SEALs last week shot him dead in Abbottabad. The strikes inflame anti-US feeling, which has soared this year since a CIA contractor shot dead two Pakistani men in a busy Lahore street in January, and worsened in the wake of the covert US raid on bin Ladens house a week ago. A drone attack in March saw Pakistan lodge a particularly forceful public protest over the deaths of civilians. After Abbottabad raid, US?has categorically stated that it has no intention to stop the drone attacks.