A Bhutanese man was killed after a Bhutan Post Bus, heading to Indian city of Kolkata from Phuentshogling, toppled at Subdhan.
Subdhan is about 120 kilometers from Siliguri towards Kolkata in India. The accident took place at about 11:30 PM, on Wednesday.
Another passenger, a Bhutanese woman, suffered a head injury while rest of the passengers escaped unhurt. There were 24 passengers in the bus of which 14 were Bhutanese and others Indian.
Police officials in Phuentsholing said police personnel were sent to the scene soon after the accident to help the passengers.
They are yet to find out the cause of the accident.