Rishi Kumar (23), a resident of Ludhiana who had come to Malerkotla to meet his relatives, was allegedly murdered with sharp-edged weapons by some persons at Malerkotla last night. The police registered a case against six persons, including Billa and Soni, under Sections 302, 148, 149 and 120-B of the IPC. But no one has been arrested so far.Kuldip Singh, Station House Officer (SHO), Malerkotla (City-II), said today that the police had registered a case on the statement of Rakesh Kumar, a cousin of the deceased, against six persons.He said that according to Rakesh, his cousin had been attacked with knives and ‘khirch’ by 5-6 persons due to which he sustained serious injuries and later died.Rishi had been admitted to Malerkotla civil hospital, from where he had been referred to Government Rajindra Hospital, Patiala. However, when he was being taken to DMC Hospital, Ludhiana, he died on the way. The attack was allegedly made on Rishi by the attackers due to some enmity, the SHO said.