Libyan authorities announce Gaddafi death investigation
It follows international pressure to explain how the former leader was killed, when film footage had shown him alive at the time he was captured.
There has been suspicion that he was shot by his captors, but the new authorities say he died during a gun battle with Gaddafi loyalists.
No details have been given of who will carry out the investigation.
The acting Libyan leader, Mustafa Abdul Jalil, said Col Gaddafi's opponents would prefer to have seen him stand trial and then suffer in prison.
Gaddafi supporters, he said, had had the most to gain from their leader's speedy death.
"Those who wanted him killed were those who were loyal to him or had played a role under him. His death was in their benefit."
Mr Abdul Jalil said the ruling National Transitional Council (NTC) had set up a committee to consider when and where Gaddafi should be buried.
His body is in the city of Misrata where it was taken on the day he died during the final battle for his hometown, Sirte.