Kolkata, July 03: CBI today arrested two Railway Protection Force (RPF) personnel on the charge of demanding bribe from a railway officer early today, agency sources said here. Officers of the anti-corruption cell of CBI raided a central Kolkata restaurant since late last night and interrogated the two -- Inspector Joydeb Ghatak and sub-inspector Suman Chandra for demanding bribe from the officer working in the reservation department at Koilaghat in the city. Bureau Report