A powerful blast ripped through a train in Nepal's restive southern plains on Sunday, wounding at least 18 people, police said.
The blast went off in a carriage of Nepal's only train that links the temple town of Janakpur in the southern plains with Jayanagar in the eastern Indian state of Bihar.
"One person is critical while the others have received minor injuries in the blast which is being investigated," local police official Yadav Khanal said by phone. "All those injured have been rushed to a local hospital."
Nepal has emerged from a decade-long civil war that ended in 2006, and the former Maoist rebels secured a surprise victory in national elections held last year.
In the southern plains, armed groups demanding regional autonomy in 2007 killed scores of people in political unrest and violence.