The last Wednesday of the Iranian calendar year is called "Chahar Shanbe Suri," (Festival of Fire). It is also known as one of the most dangerous days of the year. Iranians traditionally jump over fires and use small explosives during celebrations.
A 12 year-old boy in capital city of Tehran was killed due to the explosion of hand-made explosives.
At least 600 people of the total 2600 injured people were hospitalized, Kolivand said.
Earlier in March 11 seven people, including four children were killed in Iran’s northwestern city of Ardabil in explosion of handmade fireworks and explosives. The explosion occurred during preparing handmade fireworks and explosives for Festival of Fire inside the residential building.