The National Flag atop Sealdah railway station appeared torn in a video on Friday and the railway officials said it could have been caused by gusty winds during the rain.
In the video, which was shown on TV news channels, a part of the Tricolour atop the main station building appeared to be torn.
The flag is being immediately replaced, railway officials said.
Ekalabya Chakraborty, chief public relations officer of Eastern Railway, confirmed that Railways have got the information.
"This large flag is perched so high that it is possible that one part of it was torn by a gusty wind. The moment we got the news, we began making arrangements to replace it in the quickest possible time," Chakraborty said.
Indian Railways takes every precaution and standard measures to ensure that the national emblem and Tricolour are projected properly in railway stations. This incident was an aberration, he added.
The video was shot by a journalist and soon went viral on social media.
PTI could not verify the authenticity of the video.