King's Cross St. Pancras Station in London was closed on [insert date] following a security alert, prompting the evacuation of crowds of passengers.

Video footage shared on social media depicts the hurried exit of travelers as station staff made announcements regarding the emergency.

Transport for London issued a status update indicating that the station would remain closed as authorities responded to the alert.

The announcement urged all passengers to leave the station immediately and seek alternative travel routes.

In addition to the station closure, London Buses are accepting tickets for passengers looking to complete their journeys via reasonable alternatives.

As of now, the specific nature of the incident remains undisclosed, and no further details about potential risks or threats have been provided.

This incident is a reminder of the security challenges faced by transport systems in urban environments, particularly in a city as vital to international transit as London.