A minor fire broke out in a room at the Prime Minister’s Office at Delhi’s Raisina Hills around 3.30 am on Tuesday, ANI reported. Ten fire engines were sent to the South Block, and the flames were doused within 20 minutes.

There were no casualties, officials said.

“Around 3.35 am, we got a call in our control room that a fire broke out in the Prime Minister’s Office, room number 242,” Divisional Fire Officer Gurmukh Singh told ANI, adding that the fire broke out because of sparks in a computer’s UPS, or uninterruptible power supplier.

The South Block houses not only the Prime Minister’s Office but also the ministries of defence and external affairs and the offices of the national security advisor, Cabinet secretary and foreign secretary.