Gurugram, July 11 -- A Rs.10-crore extortion demand allegedly issued by a fugitive gangster operating from abroad culminated in Thursday night's shootout in Gurugram's upscale Sushant Lok Phase-I, where four alleged gangsters were killed and another injured in an encounter with Haryana Police, investigators aware of the case details said on Friday. Police officials aware of the case details, who asked not to be identified, said that the 35-year-old businessman had not lodged any formal complaint regarding the extortion threats, but Haryana Police's Special Task Force (STF), which monitors organised crime networks, had been tracking communications linked to gangster Deepak Nandal and his plans to target a businessman. Officials said intellig...