After a slight decrease from severe levels, the mercury is hovering around 40 degrees Celsius in most regions
Police said that the incident occurred after 10am on Sunday in the Gayeshpur union, near Pabna town, which is scheduled to go to polls on May 28.
The victim has been identified as Abdur Rahim.
“Unidentified men opened fire when Rahim along with some others were putting up posters for a candidate,” said Pabna police OC Abdullah Al Hasan.
Rahim died on the spot, he added.