The UN subcommission, which would be probing the assassination of the former premier for six months, has asked Islamabad to send two copies of the investigation report prepared by Pakistan intelligence agencies.
It may be noted that the FIR registered by the Rawalpindi police regarding the suicide attack on Bhutto, and the reports of local investigation agency are in Urdu. The security plan made by the police for Bhutto's election rally in Rawalpindi following which she was killed is also in Urdu, The Dawn reports.
The three member UN commission would be headed by Chile's U.N. Ambassador, Heraldo Munoz.
The other two members of the commission are the former Indonesian attorney general Marzuki Darusman, and Ireland's former deputy police commissioner Peter Fitzgerald.
The commission would only enquire into the facts and circumstances of Bhutto's death, and further action against the perpetrators would only be taken by the Pakistan government.
"The duty of determining criminal responsibility of the perpetrators of the assassination remains with the Pakistani authorities," UN spokeswoman Michele Montas has said.
Bhutto was killed on Dec 27, 2007 in a gun-and-suicide bomb attack after she was leaving an election rally in Rawalpindi.