LONDON — An airport in London was shut down Sunday night and Monday by a relic of World War II: a 1,100-pound unexploded German bomb discovered during construction work.

The airport, London City, is in the Docklands, an industrial area considered crucial to Britain’s war effort, and many banks and other financial institutions today have their offices in the nearby Canary Wharf neighborhood.

London was peppered with thousands of German bombs in 1940 and 1941, a period known as the Blitz. Unexploded devices from that era, including grenades, are removed every year from backyards, fields and construction sites. The docks were hit particularly hard.

The latest bomb was found on Sunday at the King George V Dock on the River Thames, one of the docks between which the runway sits, airport officials said.