A U.S. drone strike in Somalia on Thursday is believed to have killed a senior member of the al-Shabab extremist group who allegedly helped plan the 2013 Westgate Mall attack in Nairobi , officials said . Adan Garar and two others are suspected to have been killed after their car was targeted near the town of Bardhere , the Kenyan and U.S. officials said . The senior Kenyan official , who insisted on anonymity because he was n't authorized to give the information to the media , says Garar is also suspected of planning failed attacks on Kenya 's coast and in the Ugandan capital , Kampala , last year . Scroll down for video . A U.S. drone strike in Somalia is believed to have killed a senior member of the al-Shabab extremist group behind 2013 Westgate Mall attack in Nairob . 67 people were killed in the 2013 attack as shoppers fled the area . The U.S official also insisted on anonymity . The 2013 attack claimed the lives of 67 people . CBS News reports the strike was carried out as Garar was traveling in a car fired on by a Predator drone . Adan Garar was killed along with two others when their car was targeted near the town of Bardhere . Anti-terror police foiled a planned attack in the coastal city of Mombasa after they intercepted a car packed with explosives in March 2014 , according to Kenyan authorities . According to police , al-Shabab militants had planned simultaneous attacks on the international airport in Mombasa , the ferry crossing and a supermarket . The car laden with explosives was to be detonated on a ferry . With Garar 's alleged planning , the gunmen stormed a shopping mall in Nairobi on Saturday killing at least 20 people in what Kenya 's government said could be a terrorist attack . Al-Shabab , an Islamic extremist group , has vowed to inflict violent attacks on Kenya and Uganda because the two countries have contributed troops to the African Union force supporting the government in Somalia . Sixty-seven people were killed in the Westgate attack , which was carried out by four gunmen from al-Shabab .
Adan Garar and two others are suspected to have been killed after their car was targeted near the town of Bardhere . Garar is also suspected of planning failed attacks on Kenya 's coast and in the Ugandan capital , Kampala , last year . The strike was carried out Thursday as Garar was traveling in a car fired on by a Predator drone .