The district's Superintendent of Police (SP) Md Nizam Uddin said the murder took place at Porharchar village's Batchar area early on Thursday.

He identified the deceased as Haidor Ali alias 'Poly', 45, a transgender leader based in capital Dhaka.

Haidor's brother 'Bahadur', 30, and nephew 'Ibrahim', 10, were also injured in the attack. They were admitted to Islampur Upazila Health Complex.

SP Nizam said after breaking into the house, the attackers beat up Haidor with metal rods and slashed with sharp weapons before they fled.

"Haidor was a top leader of the transgender people of Dhaka's Karwan Bazar, Gulshan and Baridhara areas. Haidor had an old dispute with another transgender leader named Khairul Islam alias 'Swapna' over establishing dominance in those areas."

The police official said they were investigating whether Haidor was killed over that dispute.

The body had been sent to Jamalpur Sadar Hospital for autopsy.