The fire had broken out in the AC plant rooms in the second basement of the building, officials said.
A fire broke out in the CBI building at CGO complex in Lodhi Road area on Thursday morning, officials said.
Fire officials said a call about a blaze was received at 11.36 am.
Six fire engines were rushed to the spot and the blaze was brought under control, a senior fire official said.
The fire had broken out in the transformer and AC plant rooms in the second basement of the building, he said.
The police rushed to the spot after they received a call about the fire, officials said.
A lot of smoke was coming out from the basement of the building. Fire tenders, PCR vans and CAT ambulances reached the spot. No casualty has been reported and the situation is under control, a senior police officer said.