A 40-year-old man was killed while his brother sustained serious injuries when a group of assailants attacked them with sharp weapons in the district's Hathazari upazila Friday night.
Police and family members of the victims attributed the attack to a financial dispute pertaining to a local madrasa in the Kala Badshahpara area of Mirzapur union of the upazila.
The deceased was identified as Hossain Elahi, 40, son of Lotu Mistri. His brother, Momen Elahi, sustained serious injuries in the attack.
According to locals, the two brothers were having tea at a tea shop in the area when the assailants suddenly fired at them and then attacked them with sharp weapons.
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The two seriously injured brothers were rushed to Hathazari Upazila Health Complex from where they were shifted to Chattogram Medical College Hospital. Hossain died of his injuries at 10.30pm.
Mohsin, the brother-in-law of the deceased, said the attack came in the wake of a financial dispute at the local madrassa.
Hathazari Model Police Station officer-in-charge Mohammad Rafiqul Islam said that "efforts are on to nab the accused".