Bihar will see six-phase polling beginning on April 10. Gaya along with five Maoist-affected constituencies - Aurangabad, Sasaram, Jamui, Nawada and Karakat - will vote on Thursday.
Gaya Senior Superintendent of Police Nishant Tiwari said two "cane bombs" were recovered from Banke Bazaar area. In Aurangabad, five similar bombs were found near Aruara and Pathakbigha village.
Three CRPF troopers were killed in Aurangabad Monday when an improvised explosive device blew up while they were defusing it.