The district records 40.8 degrees Celsius, the highest this seasons
The accident took place early Friday on Tarakandi-Bhuapur highway in Sarishabari Upazila, said Inspector Joaher Hossain Khan of Tarakandi police investigation centre.
The workers have been identified as Nasir Uddin, 50, Reaz Uddin, 45, and Abdur Barik, 49.
Nasir was a resident of the Upazila’s Putiapara neighbourhood. Reaz and Barik lived in Sancharpar.