Edgware Road Tube station has been shut due to a police incident, with officers seen swarming the busy north-west London street.
Videos shared on social media show multiple police vehicles parked outside the station, while a large cordon has been put in place on the street.
Transport for London (TfL) says on its website: "This station is closed while police respond to an incident. Tickets are being accepted on London Buses."
Transport for London (TfL) has advised passengers affected by the closure of Edgware Road Tube station to re-plan their journeys.
Closures are in place on Marylebone Flyover, Marylebone Road and Edgware Road, as well as nearby roads, according to Google Maps. Traffic appears to be heavy on surrounding roads.
