Authorities on Sunday imposed curfew and restrictions across Kashmir to prevent separatist programmes to commemorate Pakistan's Independence Day.The separatists have asked people to offer special prayers for Pakistan on its Independence day that falls on August 14.Authorities gave instructions to all security forces deployed here to ensure that no Pakistani flag is hoisted anywhere.Ever since separatist violence in Kashmir in the early 1990s, separatists have been hoisting the Pakistani flag and holding parades.Broadband internet connections were suspended since Saturday evening. Mobile and internet services were suspended on July 9 and have not been restored till date.Police said curfew and restrictions will remain in force in all the district headquarters in addition to all major towns.All separatist senior leaders remained under preventive detention.So far, 57 people including 55 civilians and two policemen have been killed in the ongoing violence.Over 3,500 people including security personnel have been injured during the unrest that started on July 9, a day after the killing of Hizbul Mujahideen commander Burhan Wani.