A group of four-to-five heavily armed militants, who stormed an army camp here early Saturday and later entered the JCO quarters have been surrounded as security forces started room-to-room intervention."Room-to-room intervention is now going on to pin down the terrorists inside the Junior Commissioned Officers' building that they managed to enter," informed sources in the army said.A JCO was critically injured and his daughter also suffered injuries when the militants entered the Sunjuwan Military Station around 4.45 a.m. hurling grenades and heavy volume of automatic gunfire.There were intelligence inputs that Jaish-e-Muhammad (JeM) militants were planning to carry out an attack around the 5th death anniversary of Parliament attack convict, Afzal Guru, who was hanged on February 9, 2013 in Tihar Jail, informed sources in the police said.All educational institutions within half a kilometre radius of the camp have been shut down for the day.Jammu and Kashmir Speaker Kavinder Gupta visited the main gate of army camp as the security forces carried out the anti-terror operation against the holed up militants.In 2006, a suicide attack carried out at the same camp saw the death of 12 soldiers before two fidayeen militants were killed.