Police late on Friday night picked up another suspect allegedly involved in the murder case of Sambasivudu, former Maoist leader and a member of TRS Polit Bureau. Shakeel, Feroze, Abu and Imram from Hyderabad had surrendered to the Chouppal police. They are being interrogated, according to Superintendent of Police Rajesh Kumar. He told The Hindu that the killers would be produced before the press on Sunday.