Two cousins were injured yesterday when objects they found in Rangpur Zila School playground exploded.
Nur Alam, 10, son of Rashidul Haque, sustained injuries to his face while Nishat, 15, son of Ershadul Haque, to his left hand. They are residents of Keranipara area under Rangpur City Corporation, said police.
Around noon, the boys picked up two round objects while they were gathering dried leaves and scrap paper on the school compound to start a fire for warmth, said Sub-Inspector Mahtab Uddin of Kotwali Police Station in Rangpur.
They played with the objects for a while, mistaking those for balls. They later set those beside the heap of dried rubbish they had gathered. Soon after they lit the fire, the objects, apparently bombs, went off one after another, rocking the area with a loud noise, the SI added.
Locals soon came to the children's rescue and rushed them to Rangpur Medical College Hospital.
An investigation is underway to trace the source of the bombs, SI Mahtab also said.