Srinagar, December 11 (IANS) Four policemen were killed on Tuesday in a militant attack in Jammu and Kashmir's Shopian district. The militants attacked a police picket in Zainpora village that was set up to protect members of the minority community. Police said three policemen were killed on the spot while a fourth policeman died while being shifted to hospital. The militants escaped with four rifles of the policemen. A manhunt was launched after the attack to trace the assailants. The Jaish-e-Muhammad (JeM) outfit has claimed responsibility for the attack.