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.

London to Paris trains resume as WW2 bomb discovery prompts evacuations - Disruption leaves crowds of passengers stranded at London’s St Pancras International and Gare du Nord in Paris

The discovery of a huge unexploded World War II-era bomb caused transportation chaos in Paris on Friday, including the suspension of high-speed train links with London and Brussels and the closure of a vital road artery into the French capital.