Eurostar trains to London and all trains heading to northern France were brought to a halt Friday following the discovery of an unexploded World War II era bomb on tracks leading to the nation’s busiest station.

The police successfully defused the explosive device, which weighs more than 1,000 pounds and was found near tracks north of the French capital during landscaping work.

An unexploded World War Two bomb found near Gare du Nord station in Paris was defused on Friday after trains to and from the station - one of Europe's biggest - were cancelled.