Maoists blasted a State-run school at a village in Bihar's Aurangabad district, police said.
Over 50 ultras surrounded the school building in Tetrain village under Deo police station area and triggered a dynamite blast to blow it up on Thursday night, they said.
Three rooms of the school building were destroyed in the blast, they said.
A powerful bomb was also recovered from adjoining Yadupur village where the Naxalites blew up a school building last year.
Raids are on in the area to nab the ultras.
