Slain former premier Benazir Bhutto's Pakistan People's Party has demanded that an investigation into her killing be based on the letter she had written to President Pervez Musharraf before her return from exile.
In the October 16 letter, Bhutto had named several people she believed were involved in an alleged plot to kill her.
"It (the letter) was a dying declaration," PPP leader Latif Khosa told the Dawn newspaper.
Khosa said former Punjab chief minister Pervaiz Elahi, former Sindh chief minister Arbab Ghulam Rahim, Intelligence Bureau chief Ijaz Shah and former Inter-Services Intelligence chief Hameed Gul should be named in the FIR on the basis of that letter.
He said police should have allowed PPP leader Makhdoom Amin Fahim or Naheed Khan, political secretary to Bhutto, to lodge an FIR in connection with her assassination.
Police had washed the site at Liaquat Bagh in Rawalpindi where Bhutto was attacked in order to erase evidence which would have led to the killers, alleged Khosa, a top lawyer.
Khosa said when the whole world has seen the assassin shooting Bhutto with a handgun, the government was busy selling its "skewed stories".
The government is trying to convince people that she had hit her head against the lever of her vehicle's sunroof after the suicide attacker detonated his explosives, he said.