Libyan rebels now controlled no less than 95 per cent of Tripoli, the capital of Libya, as the rebels intensified a final push to topple the 42-year old regime of Muammar Gaddafi. Two of his sons, including Saif al Islam, his heir apparent, have been captured and are now in the custody of the rebels, with the International Criminal Court confirming the arrests, after making contacts. But the puzzle was Gaddafi himselfâ€”he seems to have literally vanished, as his whereabouts remain unknown. A top diplomat of the rebels in London, Mahmud Nacua said â€œthe fighters will turn over every stone to find him, to arrest him, and to put him in the court.â€ The ICC had issued an arrest warrant against Gaddafi and his son, Saif al Islam and his intelligence chief in June, over the killings of defenceless civilians. The rebels said they wanted Gaddafi badly as spokesman Mohammed Abdel Rahman said in Tripoli that as long as Gaddafi remains on the run, â€œthe danger is still thereâ€. Nacua acknowledged that there are â€œstill some pocketsâ€ of support for Moammar Gadhafi, but rebels are asserting control. The AP reported that tanks opened fire at rebels trying to storm Gadhafiâ€™s main compound in Tripoli on Monday, a day after a lightning advance by opposition fighters who poured into the city with surprising ease. The continued resistance by Gaddafi fighters has prompted both Britain and Australia to call on the former strongman to relinquish power, quickly. For the international community, Gaddafi is already history. TV network, Al-Jazeera captured euphoric residents celebrating in the Green Square, the symbolic heart of the Gadhafi regime, where pro-Gaddafi rallies were held until Sunday. â€œItâ€™s over, frizz-head,â€ chanted hundreds of jubilant men and women massed in Green Square late Sunday, using a mocking nickname of the curly-haired Gadhafi. The revelers fired shots in the air, clapped and waved the rebelsâ€™ tricolor flag. Some set fire to the green flag of Gadhafiâ€™s regime and shot holes in a poster with the leaderâ€™s image. Meanwhile, clashes broke out at Gadhafiâ€™s longtime command center known as Bab al-Aziziya early Monday when government tanks emerged from the complex and opened fire at rebels trying to get in, according to Abdel-Rahman and a neighbor. An AP reporter at the nearby Rixos Hotel where foreign journalists stay could hear gunfire and loud explosions from the direction of the complex. Tripoli resident Moammar al-Warfali, whose family home is next to the compound, said there appeared to be only a few tanks belonging to the remaining Gadhafi forces that have not fled or surrendered. â€œWhen I climb the stairs and look at it from the roof, I see nothing at Bab al-Aziziya,â€ he said. â€œNATO has demolished it all and nothing remains.â€ The Rixos also remained under the control of Gadhafi forces, with two trucks loaded with anti-aircraft machine guns and pro-regime fighters and snipers posted behind trees. Rebels and Tripoli residents set up checkpoints elsewhere in the city. State TV broadcast bitter audio pleas by Gadhafi for Libyans to defend his regime. Gadhafi, who was not shown in the messages, called on his supporters to march in the streets of the capital and â€œpurify itâ€ of â€œthe rats.â€ Government spokesman Moussa Ibrahim also claimed the regime has â€œthousands and thousands of fightersâ€ and vowed: â€œWe will fight. We have whole cities on our sides. They are coming en masse to protect Tripoli to join the fight.â€ NATO officials promised warplanes from the alliance would continue to conduct regular patrols over Libya despite the latest rebel successes. Gadhafiâ€™s former right-hand man, who defected last week to Italy, said the longtime leader would not go easily. â€œI think itâ€™s impossible that heâ€™ll surrender,â€ Abdel-Salam Jalloud said in an interview broadcast on Italian RAI state radio, adding that â€œHe doesnâ€™t have the courage, like Hitler, to kill himself.â€ Jalloud, who was Gadhafiâ€™s closest aide for decades before falling out with the leader in the 1990s, fled Tripoli on Friday, according to rebels. The startling rebel breakthrough, after a long deadlock in Libyaâ€™s 6-month-old civil war, was the culmination of a closely coordinated plan by rebels, NATO and anti-Gadhafi residents inside Tripoli, rebel leaders said. Rebel fighters from the west swept over 20 miles (30 kilometers) in a matter of hours Sunday, taking town after town and overwhelming a major military base as residents poured out to cheer them. At the same time, Tripoli residents secretly armed by rebels rose up. When rebels reached the gates of Tripoli, the special battalion entrusted by Gadhafi with guarding the capital promptly surrendered. The reason: Its commander, whose brother had been executed by Gadhafi years ago, was secretly loyal to the rebellion, a senior rebel official, Fathi al-Baja, told The Associated Press. President Barack Obama said Libya is â€œslipping from the grasp of a tyrantâ€ and urged Gadhafi to relinquish power to prevent more bloodshed. â€œThe future of Libya is now in the hands of the Libyan people,â€ Obama said in a statement from Marthaâ€™s Vineyard, where heâ€™s vacationing. He promised to work closely with rebels. South Africa, which led failed African Union efforts to mediate between the rebels and Gadhafi, denied that it was offereing Gaddafi an asylum. Foreign Minister Maite Nkoana-Mashabane , called for a government of national unity and denied that the country had sent a plane to evacuate the embattled leader. Nkoana-Mashabane also said, â€œWe donâ€™t know his (Gadhafiâ€™s) whereabouts. We assume he is still in Libya.â€ The uprising against Gadhafi broke out in mid-February, inspired by successful revolts in Egypt and Tunisia. A brutal regime crackdown quickly transformed the protests into an armed rebellion. Rebels seized Libyaâ€™s east, setting up an internationally recognized transitional government there, and two pockets in the west, the port city of Misrata and the Nafusa mountain range. Gaddafi clung to the remaining territory, and for months neither side had been able to break the other. In early August, however, rebels launched an offensive from the Nafusa Mountains, then fought their way down to the Mediterranean coastal plain, backed by NATO airstrikes, and captured the strategic city of Zawiya. The rebelsâ€™ leadership council, based in the eastern city of Benghazi, sent out mobile text messages to Tripoli residents, proclaiming, â€œLong live Free Libyaâ€ and urging them to protect public property. Internet service returned to the capital for the first time in six months. Gadhafi is the Arab worldâ€™s longest-ruling, most erratic, most grimly fascinating leader â€” presiding over this North African desert nation with vast oil reserves and just 6 million people. For years, he was an international pariah blamed for the 1988 bombing of a Pan Am jumbo jet over Lockerbie, Scotland, that killed 270 people. After years of denial, Gadhafiâ€™s Libya acknowledged responsibility, agreed to pay up to $10 million to relatives of each victim, and the Libyan ruler declared he would dismantle his weapons of mass destruction program. That eased him back into a romance with Western nations, until the arab spring of revolt and the war against Gaddafi by his own people.