Another man, stabbed on August 9 by a drug addict in Birganj upazila of the district, died at M Abdur Rahim Medical College Hospital yesterday.
The victim is Md Shahidul Islam, 38, son of late Madhu Mia of Purba Jagdal village in Birganj.
On August 9 early morning, Md Rabiul Islam, 30, son of Tara Mia of Purba Jagdal village in the upazila, allegedly stabbed Suruj Ali, 42, son of Md Kashem Ali, to death at the village on Dinajpur-Panchagarh highway.
Then Rabiul stabbed Shahidul and his son Ekramul Haque at Hatkhola in the upazila.
Later, locals caught Rabiul from Gorerhat village in the upazila, brought him back to Purba Jagdal village and burnt him to death.
Police arrested two women in connection with the killings.