Ban Ki-moon rejected Pak's appeal to reopen the UN probe into the assassination of Benazir Bhutto.
The three-member United Nations commission, which was headed by Chile's former UN ambassador Heraldo Munoz, presented its report on 15 Apr 2010.
On Jul 2010 Pakistan raised objections to the report and appealed UN to reopen the probe.
Pakistan Foreign Minister Shah Mahmood Qureshi wrote a letter to Ban Ki-moon stating the objections over several aspects of the report, including the panel's observations implying a nexus between the Pakistan Army and the Taliban.
54 year old Bhutto was killed on 27 Dec, 2007 when a suicide bomber exploded himself close to her car in Rawalpindi while she was campaigning for the Pakistan People's Party (PPP) in parliamentary and provincial elections.
The report slammed the Musharraf government for both failing to protect Bhutto after she returned to Pakistan and for not properly probing the circumstances leading to her murder.
The report also found that some elements of Pakistan's spy agency ISI deliberately prevented investigations.