13-year-old Mahin was on his way to a friend’s house when a speeding garbage truck hit him
Police suspect the bomb exploded as they were playing with it after bumping into it in the street in front of their house in the afternoon.
The children were identified as Kulsum Akter, 8, and her sister's daughter ‘Riya’, 4.
They were taken to Dhaka Medical College and Hospital with critical injuries and died in the space of half an hour.
Riya's mother Heera Begum told reporters at the hospital that the explosion had taken place ataround 3:30pm near the power office in the area.
She said, “They were playing in front of our house. I rushed there on hearing a loud blast and found them on the road with blood all over them.”