Trinamool Congress MLA Jiban Krishna Saha was on Monday morning arrested by CBI sleuths from his residence at Burwan in Murshidabad district in connection with its investigation into the school jobs-for-graft scam case, sources said. Saha, an MLA from Burwan constituency, was being questioned by CBI officers since April 14 in connection with the case involving alleged illegal recruitments in West Bengal government-sponsored and -aided schools. Saha was arrested this morning from his residence by CBI officials and taken away in a convoy of vehicles with CRPF security, the sources said.