A fire alarm was sounded and the station, which is a main interchange, was closed.
Officials said the fire started on a floor mat outside the station but the reason behind it was still to be ascertained.
Four fire tenders rushed to the spot and doused the fire in a few minutes.
Police said smoke was emanating from the fire on a floor mat outside the station’s gate No.1. The smoke entered the station which led to a little panic among commuters.
“As a precaution, it was decided to close the station at 1.22 p.m. but before it could be fully closed, it was reopened at 1.28 p.m. as everything was found safe and in control,” said a metro official.
Earlier, fire officials said the blaze occurred inside the station.
Stoppage of trains at the station was also halted for around 20 minutes.
“The train did not stop at Rajiv Chowk. But there was a pungent smell as the train crossed the station. We were allowed to deboard the train at Barakhamba station,” a passenger told IANS.