A five-year-old girl died on impact when the Bolero pickup her family was travelling in veered off road at Khalungzig above Kurizampa in Mongar on July 30.
The incident occurred around 5:30pm and the other four passengers, including the driver, are recovering in Mongar regional referral hospital.
Sources claim that the vehicle went off 70ms below the road.
Mongar police say they are yet to find out the cause of the accident. They said the driver has valid documents.