Patna:�Bihar police today claimed to have cracked journalist Rajdeo Ranjan's murder case by arresting five persons in Siwan district. "The police arrested five persons in connection with the murder of journalist Rajdeo Ranjan and recovered a 7.65 bore country-made pistol and three motorcycles," Additional Director General of Police (ADG Headquarters) Sunil Kumar told reporters here. The arrested were identified as Rohit Kumar, Vijay Kumar Gupta, Rajesh Kumar, Ishu Kumar and Sonu Kumar Gupta, the ADG said. He said Rohit Kumar has admitted that he fired on the scribe resulting in his death. Search is on for some more persons involved in the crime, he added. The police have also seized a 7.65 bore country-made pistol and three motorcycles used in the crime, he added. Rajdeo Ranjan, district bureau head of a leading vernacular newspaper, was shot dead by unidentified men when he was going on his motorcycle near fruit market on station road under town police station area of Siwan on May 13 evening. The killing had drawn country-wide criticism for Nitish Kumar government as a reflection of the slide in law and order situation in the state.