One person was killed and 10 others were injured as security personnel used force at several places after irate mobs set ablaze a private school and a railway hut in Kashmir Valley, in India on Monday. Nissar Ahmad Bhat was killed and three others were injured when security forces allegedly opened fire after a mob pelted stones on them at Ajas, 45 kms from here in Bandipora district in north Kashmir, a police spokesman said. With Bhat's death, the toll in the 95-day unrest in the Valley rose to 72, the Press Trust of India (PTI) reported.