Jashore had the previous highest temperature of the season at 42.6C
The incident took place on the Dhaka-Sylhet Highway at the Upazila’s Jalalpur at around 9:30pm Friday, said Sherpur Highway Police Station’s OC Nurunnabi Sarkar.
He told bdnews24.com three passengers of Sylhet-bound Hanif Paribahan bus died on the spot after it rammed into the truck.
Identities of the deceased were not immediately available.
The injured were admitted to Sylhet MAG Osmani Medical College Hospital, OC Sarkar added.