Police have detained a man suspected of killing his mother, ex-wife and two-year-old daughter in a town 193 km (120 miles) to the south of Moscow on August 1, a police source said Saturday. Acting under the influence of alcohol, the main is believed to have strangled his wife, daughter and mother with a metal wire in their apartment after they refused to give him money to spend playing slot machines. "The suspect was detained in an amusement arcade in Tula Friday afternoon," a source said. He is facing murder charges envisioning 20 years in prison or a life sentence, the source said.