African mercenaries were carrying out atrocities in Sirte in retaliation for the assault launched yesterday by the fighters of the new Libyan regime against one of the last bastions of Muammar Gaddafi, said a resident who fled the city. "There are African mercenaries that roam in the city. They shoot houses with anti-aircraft weapons in the first district, "the western edge of the city, he told AFP by telephone, but refused to give his name for fear of reprisals against his family remained in Sirte. "I think they take revenge," he added, noting that 80% of the population are from the Sirte Misrata (east). The forces of the new Libyan authorities have launched a new attack Saturday in Sirte against the loyalist forces. "All buildings in the main street were damaged," he said, adding that he had fled Sunday morning at 5:30. A son of Gaddafi in the city The university professor also said he had seen Mouatassim Gaddafi twice, including a week ago when the son of the deposed colonel came in her neighborhood after heavy fighting between loyalist forces and residents, mostly from Misrata. "He came to see the head (the community). I was standing next to him," he said. The computer said the command center of fighters pro-Gaddafi was in the basement of the main hospital in Sirte, where he had seen Mouatassim three weeks ago when he was called by the forces of the old regime to repair their computer systems.Combatants pro-CNT stated repeatedly that Mouatassim was in the city."Mouatassim is there. We heard giving orders over the radio", said Saturday was a commander of pro-CNT, Osama Muttawa Swehly. The fighting in Sirte experienced a lull Saturday night around 7:00 p.m., said computer scientist, who said that there had been several strikes of NATO during the night.