An official at the fire service control room said they received reports of fire from at least seven places just after the celebrations began on Friday midnight.
The firefighters brought the flames under control at Mirpur, Mohammadpur, Khilgaon, Demra, Sutrapur, Lalbagh and Keraniganj, the official said, adding that most of the fire incidents occurred on rooftops.
But not all the fire incidents in the night were caused by sky lanterns, said the official, Ershad Hossain.
At one place, gas leak caused a fire and a car went up in flames in Tejgaon, he said.
