LONDON (BNO NEWS) — A fire broke out at Google’s UK headquarters in London on Thursday afternoon, officials told BNO News. There were no immediate reports of casualties.

The 6-story building is located at Buckingham Palace Road, near the Victoria Place Shopping Centre. “We were called in at 1.53 p.m. (local time),” a fire brigade spokesman said. He added that the fire broke out on the fifth floor.

A total of six fire engines and 25 firefighters are on the scene to battle the fire. The spokesman described the fire as “not very large.” As of 3 p.m. UK time, the fire was still burning.

Both Buckingham Palace Road and Elizabeth Street have been closed as firefighters work to extinguish the fire, a police official said. The building has been evacuated.

Witnesses posted photos of the fire to the social networking website Twitter. One photo, posted by Jon Swaine, showed flames shooting from the roof of the building, others showed only smoke.

There were no immediate reports of injuries.