BBC News with Sue Montgomery

The Libyan Prime Minister Mahmoud Jibril has announced that the country's former leader Muammar Gaddafi is dead."We have been waiting, as Libyans, for this historic moment. Gaddafi has been killed. As to how and by whom he was killed, our experts are now investigating. And as soon as we have the results, we will announce them to everyone."

National Transitional Council fighters in Sirte have been celebrating after the capture of the city and the death of Colonel Gaddafi. A fighter loyal to Libya's interim authorities told the BBC he found the former Libyan leader hiding in a drainage

culvert

; he begged him not to shoot. Gabriel Gatehouse has been to the spot.

Well, this is the place where they captured Colonel Gaddafi. He was hiding in that

irrigation

channel there that is now becoming an instant

photo opportunity

for all these fighters who have been battling for so long to capture the former Libyan leader. They say they discovered him here just before 12 o'clock this afternoon. They pulled him out of the hole. And one fighter told me that Muammar Gaddafi said to him "What did I do to you?" They've been parading his golden gun through the outskirts of Sirte. The people who are said to have been involved in his actual capture have become instant heroes. Arguments are breaking out over who actually did the work, who

pulled him out of

the hole.

A senior official told the BBC fighting throughout Libya was over. The Libyan transitional authorities say Colonel Gaddafi's son Mutasim has been killed and his other son Saif al-Islam arrested. The Libyan information minister said Mutassim Gaddafi, who was the former national security adviser, was killed after he was found hiding with his father.