A bus caught fire due to a mechanical fault at the Dhaleswari Setu toll plaza on the Bangabandhu Expressway in Keraniganj.
Eyewitnesses said the incident occurred around 12:15pm this afternoon. The bus named Islampur Paribahan was going from Dhaka to Kuakata in Patuakhali.
"Three people were burned in the incident. One of them has been sent to the Sheikh Hasina National Institute of Burn And Plastic Surgery Unit in Dhaka for better treatment," said Badal Rahman, in charge of the Sirajdikhan Fire Service.
He said that they brought the fire under control within 20 minutes of arriving at the scene.
Regarding the incident, Nahin Reza, the executive engineer of Munshiganj Roads and Highways, said the bus caught fire due to a mechanical fault, and three people were burned.