CAIRO - Egyptian protesters said Saturday they were continuing a strike in central Cairo until the country's military rulers fulfilled the “revolution's demands”. "We are going ahead with our strike, which began on July 8 until further notice," said Mohamed Adel, a spokesman for April 6, a major protest group. "Most revolutionary groups have also agreed to continue this sit-in," he told the German Press Agency (dpa). He suggested the strike may run through the Muslim holy month of Ramadan, expected to begin on Monday. Protesters have been camping out for three weeks in Tahrir Square, a focal point for anti-Government demonstrations that forced former president Hosni Mubarak to step down. They are demanding that State institutions be 'purged' of all those believed to be loyal to Mubarak and that military trials for civilians be halted. They also want Prosecutor-General Abdel Meguid Mahmoud, who they say was appointed by Mubarak, sacked. Many protesters returned to Tahrir Square Friday night after a brief walkout in protest at religious slogans chanted by thousands of Islamists during a mass demonstration. “They breached an agreement reached with them ahead of the Friday protest on not using religious slogans,” Adel said. “This will make it difficult to coordinate with them in the future.” During the Friday demonstration, the biggest since Mubarak's ouster, Islamists called for an Islamic state to be established in Egypt.