Security forces on Sunday gunned down one more militant who was holed-up inside an army camp here after a group of terrorists attacked the military station, killing five soldiers and a civilian on Saturday.With this, the number of militants killed in the attack has risen to four, defence officials said. At least 10 persons, including soldiers, women and children, were injured.The officials said the operation was still on even as no more gun shots were fired at the shootout site after the death of the fourth militant. Searches are now going on to sanitise the camp.A group of heavily armed Jaish-e-Muhammad militants entered the Sunjuwan army base station around 4.45 a.m. on Saturday.The militants managed to enter the Junior Commissioned Officers (JCOs) quarters inside the camp while everyone was asleep.Para commandos from the Army's Udhampur-headquartered Northern Command were airlifted to flush out the militants. The Air Force provided aerial surveillance.Indian Army chief Bipin Rawat arrived here on Sunday to review the operation that lasted for nearly 30 hours.