Officials said the locally-made lethal bombs were found in Rakshi-Tongila-Chatakpur and Bankebazar area of Gaya district.
A joint squad of CRPF and state police personnel recovered the bombs during a patrol and crippled them later, they said.
Many Improvised Explosive Devices (IEDs) and landmines have been recovered in the run-up to the polls.
Yesterday, three CRPF personnel were killed while seven others were injured while tring to defuse a landmine in Aurangabad district.