Srinagar , India ( CNN ) -- Indian-administered Kashmir witnessed widespread violence Monday that killed 18 people and left 80 wounded , some of them critically . Pro-independence mobs defied a round-the-clock curfew to stage protests against India and against a Florida pastor 's now-canceled plans to burn the Quran , leading to fierce clashes with Indian security forces . Two Christian missionary schools , several government buildings and two police vehicles were set on fire by angry mobs , mostly young people , police said . The demonstrations to denounce the potential desecration of the Quran added a dimension to the three-month-long anti-India unrest . Monday 's killings are the highest single-day toll in the Muslim-majority Kashmir Valley since June 11 , bringing the death toll to 89 . Scores of others wounded in the violence are receiving treatment in Kashmir hospitals that have come under tremendous strain . Clashes between Indian security forces and stone-throwing protesters raged in numerous towns across Kashmir , from the northern resort town of Tangmarg to the central Budgam district and Anantnag in the south . Local governments appealed for calm and banned the Iranian Press TV channel , which reported on the American pastor 's plans to burn the Quran . The protests are part of a `` Quit Kashmir '' campaign launched by separatist groups against Indian rule in Kashmir . Muslim-majority Kashmir is claimed by both India and Pakistan . India deployed thousands of troops in Kashmir to guard against what Indian leaders believe was a Pakistan-backed insurgency that began in the late 1980s . That insurgency , which India says claimed more than 43,000 lives , is no longer raging , but the troops have remained .
Protests against Indian control rage on , along with protests over Quran-burning plans . Two missionary schools , many government buildings burned . Death toll since June 11 stands at 89 .