Suspected Maoists blew up a state run school at Birhni village in Bihar’s Aurangabad district in the early hours this morning.

Over 200 ultras surrounded the school building and detonated dynamites to blow it up, police said.

Four rooms of the school collapsed in the blast, they said.

A combing operation has been launched for the ultras.

Patrolling was intensified as tension ran high here.