Gurugram, Oct. 20 -- A 25-year-old man was arrested on Sunday for allegedly killing his cab driver friend in Udyog Vihar Phase-IV on Saturday, police said. According to an official at Udyog Vihar police station, the two were drinking around 11.30pm when an argument over payment broke out. "When the accused, identified as Titu, didn't stop; the victim, Vikas Kumar, 30, pushed him and asked him to leave," the officer said, citing a complaint from Kumar's family. Around 2.30am, Titu allegedly returned with his brother-in-law and two others, and the group attacked Kumar with sticks, leaving him bleeding. Sandeep Turan, spokesperson, Gurugram Police, said Kumar was declared dead at a hospital. "An FIR under has been registered," he said....