The fire started in the underground car park at an Australia team building with smoke rising up, the Committee said in a Saturday statement.
"The AOC Emergency Response Plan was activated and approximately 100 athletes and officials were evacuated in an orderly and controlled fashion," the statement said.
The fire was confined to the car park and was extinguished by the fire brigade, after which people were allowed back in the building, Sputnik reported.
An investigation into the incident is underway involving the AOC.
Brazil’s Rio de Janeiro will host the 2016 Summer Olympic Games on August 5-21.