At least 38 others were injured in the mishap that occurred when the night bus was travelling from Bhubaneswar to Sinapali town.
The accident occurred at around 3 am, the police said.
The injured passengers were admitted to Balangir District Headquarters Hospital.
Two passengers, who were said to be critical, were later shifted to VSS Medical College and Hospital in Burla town.
--IBNS (Posted on 23-05-2013)