Deputy assistant director (media) of fire service headquarters Shahjahan Sikder said fire incidents were reported from Dhaka's Mirpur, Mohammadpur, Khilgaon, Demra, Sutrapur, Lalbagh and Keraniganj areas.
He said a case of firework explosion occurred on the rooftop of a three-storey building in the city's Matuwail area when the New Year revellers ignited lanterns around 12:15am.
Two units of firefighters responded to the call and doused the fire at 1:38 am.
Another fire incident happened when a firework detonated on the rooftop of a five-storey building at Dholaikhal around 12:40 am and firefighters put out the fire at about 1:29 am, the sources said.
In the early hours of Saturday, thousands of flying lanterns and fireworks were seen in the city sky. The New Year celebration across the city continued until late into night.