A bizarre incident was caught on camera inside a Kolkata Metro train, where a man was seen spraying black paint on one of the coach doors while passengers silently looked on.

The video, which has now gone viral, has sparked widespread condemnation on social media platforms.

In the 35-second clip, a man wearing glasses is seen carrying a backpack on his chest. As he approaches the door, he pulls out a spray paint can. Without hesitation, he bends down and begins spraying black paint directly onto the Metro coach door.

What’s more surprising is that none of the other passengers intervene or try to stop him during the act. After completing the graffiti, the man casually walks out of the coach.

The identity of the man is not yet known. Kolkata Police have confirmed they are looking into the matter, and an investigation is currently underway.

More details about the Metro route and destination involved are yet to be revealed.

So far, no arrest has been made.

Authorities are examining CCTV footage and trying to trace the man based on the video. Further details are awaited as the inquiry continues.