BEIRUT - A group linked to al-Qaida, emboldened by its recent victory over rival rebels in Syria, has imposed sweeping restrictions on personal freedoms in the northern province of Raqqa as it seeks to consolidate control over the region.Reuters obtained copies of four statements issued on Sunday by the Islamic State in Iraq and the Levant (ISIL) prohibiting music being played and images of people being posted in public.The sale of cigarettes and shisha water pipes are banned, women must wear the niqab, or full face veil, in public and men are obliged to attend Friday prayers at a mosque. Violations of the rules will be punished according to sharia, or Islamic law. The directives, which cite Koranic verses and Islamic teaching, are the latest evidence of ISIL's ambition to establish a Syrian state founded on radical Islamist principles.ISIL is widely considered the most radical of the rebel groups fighting forces loyal to President Bashar Assad, and increasingly each other, in Syria's civil war.The first and only city to have fallen completely under rebel control, Raqqa has been held up by many ordinary Syrians as an example of what Syria might look like in a post-Assad era.The anti-Assad Syrian Observatory for Human Rights, a Britain-based monitoring group with sources across the country, said ISIL was turning its attention to setting up such a state after repelling an offensive earlier this month by rival Islamists and more moderate rebels."ISIL was strong before in Raqqa, but now it's the only force there," said Rami Abdulrahman, head of the Observatory. Ahrar al-Sham and the Nusra Front, two Islamist rebel factions fighting to bring down Assad's government, tried to prevent the sale of tobacco when they ruled the city briefly last year.But ISIL emerged as the dominant player and outraged residents by carrying out executions in a public square, patrolling the streets in black masks and turning government buildings into headquarters and prisons.The group's statements - its most extensive yet - were unlikely to face opposition given last week's expulsion of Ahrar, Nusra and other rebel factions.ISIL had pulled out of Raqqa and other towns in northern Syria earlier this month after an Islamist rebel alliance attacked its strongholds, taking advantage of popular resentment of the group's foreign commanders, its killing of other rebels and the drive to impose a strict interpretation of Islamic law.But ISIL regrouped, using snipers, truck-mounted commando units and suicide bombers to retake much of the lost territory.Its expansion has alarmed Western nations and helped Assad portray himself as the only secular alternative to Islamist extremism.Fighting among rebels has killed hundreds of people in the last three weeks and challenged ISIL's grip over large swathes of northern Syria. Rival rebel factions continue to clash over territory in Aleppo and Idlib provinces.