A passenger bus with Uttar Pradesh (UP) number plate, which had at least 40 people onboard, plunged into the Marsyangdi river in Nepal`s Tanahun district, the police in the neighbouring country said on Friday.

"The bus bearing number plate UPFT 7623 plunged into the river and is lying on its bank," deputy superintendent of police (DSP) Deepkumar Raya from the District Police Office, Tanahun, told ANI.