UNITED NATIONS - A letter from the Government of Pakistan containing some comments and observations on the report of the UN commission on Benazir Bhutto's assassination was submitted to the office of Secretary-General Ban Ki-moon Monday evening, according to informed sources. The letter, whose details were not given out, was delivered by the Pakistans Mission to the United Nations in New York. The sources said that the UN chief has been requested to issue the contents of the diplomatic communication from Pakistan as an official document of the UN. The three-member commission unveiled its report on April 15, saying the security arrangements by Pakistans federal and local authorities to protect Benazir were fatally insufficient and ineffective and subsequent investigations into her death were prejudiced and involved a whitewash. The UN Commission of Inquiry, appointed last year by UN Secretary-General Ban Ki-moon at the request of the Pakistani government, reached no conclusion as to the organisers and sponsors behind the attack in which a 15-year-old suicide bomber blew up Benazirs vehicle in Rawalpindi on December 27, 2007. But it found that the government was quick to blame local Taliban commander Baitullah Mehsud and Al-Qaeda although Benazirs foes potentially included elements from the establishment itself. A range of government officials failed profoundly in their efforts first to protect Benazir and second to investigate with vigour all those responsible for her murder, not only in the execution of the attack, but also in its conception, planning and financing, the Commission said. Responsibility for Benazirs security on the day of her assassination rested with the Federal Government, the Government of Punjab and the Rawalpindi District Police. None of these entities took necessary measures to respond to the extraordinary, fresh and urgent security risks that they knew she faced.