Many had suspected Gadhafi was hiding in Sirte after revolutionary forces took Tripoli in August.
CNN: Celebrations erupt in Libya amid news of Gadhafi's death
His whereabouts are unknown but some believe he may still be hiding in Sirte.
CNN: In Gadhafi's hometown, his once opulent house lies in ruins
Gadhafi died after he was captured in his hometown of Sirte on October 20, 2011.
The United States of Africa was due to be declared in his home-town of Sirte next March.
Sirte is of unique importance to the regime, both as a garrison and for what it represents.
Col Gaddafi himself was killed after being captured during an assault on his hometown of Sirte in October.
The Ministry of Defence in London confirmed Nato warplanes attacked a convoy of vehicles fleeing Sirte on Thursday.
Like so many claims in Sirte, this was hard to verify with certainty, but it seemed to add up.
For several weeks during September and October last year, fighting raged in Sirte.
But its commanders argue that the colonel's troops remain a legitimate target in Sirte since they still threaten civilians elsewhere.
Along the coast of the Gulf of Sirte, between Misratah and Benghazi, rainfall is rather less, so that the desert reaches the coast.
Not everyone in Sirte supported the old order, so some of these people have combined with fighters from elsewhere to police the town.
Gaddafi, Mutassim and former Defence Minister Abu Bakr Younis Jabr were killed on Thursday following the fall of Sirte, the last major pro-Gaddafi bastion.
Western reporters in Sirte say its people's declarations of devotion to the colonel and their willingness to fight for what they have are sincere.
We spoke to two who had been incarcerated by the Misrata militia in their home city, around 250km (155 miles) from Sirte, but subsequently released.
Most residents have abandoned Sirte after a month of fierce battles.
CNN: In Gadhafi's hometown, his once opulent house lies in ruins
Anwar Souwan said he was among a select number of fighters who knew that the former dictator was hiding inside his hometown of Sirte several days before his capture.
Sirte, Libya (CNN) -- On the outskirts of Sirte, a mansion with a columned facade lies in ruins, though its opulence is still evident under shattered glass and chunks of concrete.
CNN: In Gadhafi's hometown, his once opulent house lies in ruins
Mr Cameron has said the RAF carried out around a fifth of all strike sorties against forces loyal to Col Gaddafi, while HMS Liverpool shelled positions in Sirte during the city's siege.
In Sirte itself the complaints are rife as its people try to get back to normal - from a lack of electricity and clean water, to a critical shortage of bank notes.
Some Libyans elsewhere do not deny it, arguing that Sirte got more than its fair share of the investment in Gaddafi's time, so now it can go to the back of the queue.
One Arab media report - cited in a US Federal Research Division report last year - said Belmoktar had attended an event organized by Wissam ben Hamid, an Islamist commander, in the town of Sirte.
The fall of Sirte, which followed that of the other surviving holdout town of Bani Walid, means that virtually the whole of Libya is in the hands of the forces that took up arms against the colonel in February.
In two of them, the colonel's home town of Sirte, along the main coast road, and Bani Walid, 160km (100 miles) south-east of Tripoli, tribal elders seem keen to capitulate but plead for more time to persuade the colonel's diehard supporters to give up.
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