The workers were constructing a toilet at a school next to the temple in Faridpur’s Madhukhali Upazila
Ghior OC Mizanur Rahman said the incident took place at the upazila’s Tora Cross Bridge area on Dhaka-Aricha Highway at 11:30am on Monday.
He told reporters that the Paturia-bound bus of ‘NNB Transports’ from Dhaka caught fire instantly after the explosion.
Sixteen of the injured passengers were admitted to Manikganj Sadar Hospital and Moon Medical Hospital. Others were released after being administered first aid.
The accident halted the traffic on the highway for around half an hour, the OC said.