New Delhi, May 1 (PTI) A Delhi Police Assistant Sub- Inspector, an alleged criminal and his friend were shot dead by unidentified men in outer Delhi’s Mianwali Nagar, police said today. Bhupender alias Monu Dariyapur, accompanied by two of his personal security officers — given on a court’s direction, and his friend Arun were attacked around 11 PM last night near the national market in Mianwali nagar, they said. Monu, Arun, ASI Vijay Singh and Constable Kuldeep were in a car when a group of unidentified men arrived on two motorcycles and a car, and started firing indiscriminately, police said. Bhupendra, his friend Arun and ASI Vijay Singh were killed in the attack while constable Kuldeep was also shot in his arm and managed to survive A case has been registered on the basis of the constable’s statement, police said. The police is yet to make any headway in the case, however, several people have been detained for questioning. Police suspect it as a case of honour killing, as police sources said that Bhupendra had married a local criminal’s sister against his wishes. The case has been transferred from the district police to the Special Cell unit on the orders of Delhi Police commissioner Amulya Patnaik. Bhupendra, a porperty dealer, had a number of criminal cases against him. Sources claimed that several rounds were fired on the men. Constable Kuldeep somehow managed to run away but was chased for a few metres and shot at but he had sustained bullet injuries to his arm. The attackers even fired at the shutters and walls of nearby eateries, police said. Police have claimed that this may be a case of honour killing, as Bhupendra had married, Rajrani, the sister of Sonu Dariyapur. Monu and Sonu were friends but had a fallout after the former married the latter’s sister. Since Monu and Rajrani belonged to the same village, the elders were of the view that they are siblings. Sonu had allegedly threatened Monu on previous occasions and had once even tried to kill Monu and his wife. Following this attack, Monu and his wife had appealed for police protection, which was accepted. This is the second case of a shootout in the area. On April 29, an industrialist, who had been brought to the Rohini court for hearing by the Haryana Police, was shot dead in the neighbouring district by a 19-year-old man. PTI