A UN commission investigating the assassination of Pakistan's ex-prime minister Benazir Bhutto has questioned former military ruler Pervez Musharraf, the United Nations said Wednesday. The team arrived in Pak in July to investigate the circumstances surrounding the 2007 attack that left the two-time prime minister dead and met "dozens" of individuals. "The Commission of Inquiry had a frank, open and cordial conversation with former president Musharraf, having been able to pose to him many queries on issues central to its mandate," a statement from the world body said. The commission will submit a report to UN Secretary General Ban Ki-moon at the end of the year, which will be shared with the Pakistani government and the UN Security Council.