A court here on Saturday sentenced four persons to life imprisonment for killing a man in Raipur city in 2017, a government lawyer said. Additional Public Prosecutor Vijay Kumar Bhoi said that First Additional Sessions Judge Leena Agrawal found the four guilty. The four were Mohammad Asif, Mohammad Yasin, Sheikh Gufran Ahmed and Sheikh Sameer Ahmed, all from Raipur city. On June 15, 2017, they shot dead Irfan alias Bablu over an old enmity.