MUMBAI, July 29 -- A 32-year-old alleged gaming addict was arrested on Monday for killing his step-mother when she refused to give him money to play online games. The police said the accused and his father then buried her and got a death certificate stating she had died of natural causes. The deceased, Arshiya Khusro, 61, was married to Amir Khusro, 64, who lives with his first wife and son Imran Khusro. According to the Mira Bhayander Vasai Virar crime branch, the couple ran a tours and travels business, and Imran was allegedly an online gaming addict. When his mother refused to him give him Rs.1.8 lakh to play an online game, he allegedly went to her house on Sunday and pushed her against the washbasin where she hit her head. Imran's father then helped cover up the crime by getting a death certificate, and burying her as per religious rituals, police said. The duo cleaned the bloodstains from the bathroom, but their domestic help saw some some stains, and informed the police. Based on CCTV footage showing Imran entering the house, the police arrested the duo. "We are investigating how they got a doctor to sign a death certificate," said a police officer....