Four persons died on the spot and two others succumbed to injuries while receiving treatment, Deputy Superintendent of Police (DSP) Mahendra Khadka of Area Police Office, Butwal, was quoted as saying by My Republica.
The bus en route to Nepalgunj from Narayanghat lost control and overturned in Ghodaha forest of Devdaha along the East-West Highway in Rupandehi district last night, the report said.
Of the 16 injured, condition of four is critical. They have been sent to Bharatpur for further treatment.