Eurostar trains to London and all trains heading to northern France have been brought to a halt following the discovery of an unexploded bomb dating back to World War II near the tracks.

An unexploded WWII bomb discovered near tracks leading to France's busiest train station has severely disrupted rail service as police work to disable the device.

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.

All traffic to the train station, which hosts Eurostar trains as well as high-speed and local services, was closed as Paris police worked to disable the device.

Paris police say travel chaos from the overnight unearthing of an unexploded World War II-era bomb has spread to the French capital Paris’ road network

This Paris regional train was parked on the tracks in the suburb of Saint-Denis as services ground to a halt 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.

The discovery of the unexploded bomb, which weighed more than 1,000 pounds, near one of France’s largest trains stations caused travel disruptions in Paris and other parts of Europe.