Posing as civilians under a new intelligence-based operation to target militant leaders, the Jammu and Kashmir Police have arrested top Lashkar-e-Taiba (LeT) commander Junaid and gunned down another militant from the Pakistan-based outfit and three from Hizbul Mujahideen.A police team in the disguise of bus passengers arrested Junaid, an expert in making improvised explosive devices (IEDs) and said to be behind dozens of attacks on security forces and civilians in the last ten years. As part of the 'intelligence warfare' operation, a police party, posing as milkmen, killed another top LeT commander in Baramullah in the recent past, the police sources said. Three Hizbul Mujahideen commanders have been killed in similar surgical actions in Srinagar city and in Doda, they said, adding that 13 such operations have been carried out across the state.