A fire has broken out at the office of Dhaka North City Corporation Mayor Atiqul Islam.

The incident was reported around 7am on Thursday, according to the fire service.

Four firefighting units worked to tame the blaze that started in a room on the eighth floor of the building. They eventually took control of the situation around 9 am, said Rashed Bin Khaled, duty officer at the Fire Service Control Room.

The authorities, however, could not immediately determine the extent of damage caused by the fire.

The DNCC headquarters span across several floors of the 22-storey building in Dhaka's Gulshan. The mayor’s office is on the eighth floor.

The building also houses the offices of United Group, which constructed the structure on city corporation land.

Farid Uddin, the mayor’s personal aide, said officials went to the office after they were informed about the incident.

“The fire broke out on the floor where the mayor’s office is situated. We are yet to determine the source of the fire, but assume that an electrical glitch may have sparked it,” he said.

Mokbul Hossain, a spokesman for the DNCC, said a "short circuit" in the electrical control room next to the elevator on the eighth floor is believed to be the cause of the fire.

“The entire floor is engulfed in smoke as a small portion of the ceiling caught fire. However, work is underway to break some of the glass windows on the eighth floor near the reception and the front end to let the smoke out.”

Firefighters are trying to pinpoint the source of the fire, but no major damage has been done so far, according to him.