The roads around the Royal Exchange and Bank of England have been closed down and a police robot has been deployed, as a result of a suspect vehicle.
It's rare to see the City so empty - and as the pictures below reveal, the closure has caused chaos for commuters.
City Police have tweeted that they are dealing with a suspect vehicle and that as a result the "surrounding roads are closed to pedestrians and vehicles". Now the area has been deemed safe, and reopened to pedestrians.
The Bank of England released a statement to say that the central bank had "moved staff to safe areas of the building", from essential operations could continue.
Bank station has also been re-opened with trains running as normal. Central and Northern Line trains were closed during the security alert, and local office workers were told to stay clear of windows.
Curious that someone's abandoned a car in front our office / Bank of England... Streets are closed, lockdown on... pic.twitter.com/j7g5CzAPjM— Jen Dyer (@JenDyer) May 15, 2014
Black car left abandoned in Bank down the road from my work. pic.twitter.com/e4nCvTkKUF— Rachel Laura Evans (@MissREvans) May 15, 2014
City of London bomb scare... pic.twitter.com/3NZ4u98zly— Shariff Ahmed (@Shariff1979) May 15, 2014
Police deploy bomb-disposal robot - Bank of England - Security Alert pic.twitter.com/crHCKUbSm3— JoshUA (@JoshuaHearne) May 15, 2014
Police seal off Bank of England/Gresham StreetCheapside. Dumped car at bank Police robot is being sent to investigate pic.twitter.com/tty0jqtrO1— badger (@this_is_badger) May 15, 2014