At one stage, Badal stabbed his wife with a knife, killing her on the spot.
Hearing screams, Shohag Mia, 24, son of Badal, Taijul and Monowara and their daughter Kulsum Begum appeared there and tried to save Nazma from the attack.
But Badal attacked them with the sharp weapon, leaving Taijul and Monowara dead and injured Shohagh and Kulsum.
They were taken to Narsingdi General Hospital.
On information, police rushed in and arrested Badal from the spot.