The gang shootout took place early Thursday, say local police.
The deceased has been identified as Azadur Rahman Tokan, 38, a resident of Makimpur village under Horinaku upazila of Jhenaidah district. Sentenced for 10 years in a firearms case, he had long been absconding.
Kotwali police station Officer-in-Charge (OC) Ilias Hossain said: “We had information that two gangs of miscreants locked in gunfight on the Jessore-Jhenaidah highway in the dead of night. Around 2am, police reached the spot and fired several shots to disperse them.
“When the miscreants fled in the face of our actions, police discovered bullet-injured Tokan at the battle scene and took him to Jessore General Hospital,” the OC added.
The hospital's physician M Abdur Rashid said a bullet had hit on the man's head and killed him before he was brought to the hospital.
The OC said police also recovered a firearm and a bullet from the spot.