WASHINGTON (AFP) - US officials stuck to their belief that Taliban chief Baitullah Mehsud was killed last week, amid reports a CIA drone fired missiles at him as he was getting a leg massage on the roof of his father-in-laws house. A US counterterrorism official told AFP on Monday there are strong indications (Mehsud) is dead following a missile attack launched from unmanned aircraft. No one is expecting him home for dinner tonight, the official said. US President Barack Obama is being told Mehsud was killed after a dramatic escalation of aerial surveillance, with nine unmanned drones assigned to target the Taliban leader, a US official told CNN television. On Wednesday night, US surveillance in Pakistan spied a man on the roof of Mehsuds father-in-laws home in South Waziristan. The description was of a short, stocky man who was following the physical description of Mehsud, CNN said, citing the intelligence official. A woman was massaging the mans leg and the Central Intelligence Agency knew Mehsud had diabetes, experienced pain in his legs, and often sought relief in that way, the report said. Officials already had authorisation from Obama to strike Mehsud if they thought they had a clear shot. Thats when the CIA decided to move in, the network reported. A top Taliban commander, Hakimullah Mehsud, earlier Monday challenged Pakistan to prove that Mehsud was dead, insisting in a telephone call to AFP that the warlord was still alive. Although Pakistan said it believed Baitullah Mehsud was killed in a US drone attack along with his wife on Wednesday, there has been confusion over his fate. Both governments have stopped short of confirming his death. White House national security advisor Jim Jones said on Sunday that the United States was 90 percent sure Baitullah Mehsud had died after a US missile strike. The Pakistani government believes he is and all the evidence we have suggests that, Jones said in an interview with Fox News Sunday. Jones and Pakistani officials also said dissension has emerged in the ranks of the Taliban over who should succeed Baitullah Mehsud. Hakimullah Mehsud said the insurgent group would issue a message in the next three to four days proving Baitullah Mehsud was still alive. Hakimullah said Baitullah was only a bit sick. He did confirm to AFP, however, that Baitullahs wife had been killed in an attack, adding that the Taliban would soon avenge her death.