The deceased was identified as Rahat Hossain Rabbi, 31, a contractor and son of Rabiul Awal of the area.
Quoting Ibrahim Khalil, paternal uncle of the victim, sub-inspector of Banani Police Station, Amzad Sheikh, said Munna, a friend of Rabbi along with five others entered the building he lived around 4:30 am and hit Rabbi with a sharp weapon at the staircase, leaving him injured.
Later, Rabbi was taken to Kurmitola Hospital where he succumbed to his injuries, reports UNB.
The motive behind the killing could not be known immediately.