A mass cordon has been thrown up by Police around both London Victoria bus and railway station following a Police incident that officers have yet to confirm the nature.
A large number of officers were scrambled to the area just before 11pm on Tuesday evening.
Officers have blocked off the station and surrounding roads with witnesses saying that they saw a male being chased by Police officers.
Buckingham Palace Road, Ebury Street, Eccleston Place and Ebury Mews have also been cordoned off as part of the same incident.
A number of Night buses have also been affected and have been put on divert
The Met Police have been approached for comment