Patna: At least four people killed and over 20 injured in a horrific bus accident on National Highway 57, on Saturday morning. According to the police reports, the truck collided with the bus on the highway. The bus was heading towards Supaul from Darbhanga.

National Highway 57 links Muzaffarpur to Purnea in Bihar. It passes through Muzaffarpur, Darbhanga, Muria, Supaul, Narahia, Narpatganj, Forbesganj, Araria.