File photo of passengers waiting for a Eurostar train in Paris on October 18, 2016. Photo: Thomas SAMSON / AFP
Traffic was blocked for around three hours before lunchtime due to a power outage on the French side, a spokesman for Eurotunnel told AFP.
“The problem has been identified and current has been restored but now we need to check everything, as we do after every outage,” the spokesman added.
No trains were stuck in the tunnel, which runs for 50 kilometres under the English Channel, and freight and passenger trains were able to resume at around 1:30 pm (1130 GMT), the company added.
A major electrical fault in October 2016 also led services through the tunnel to be suspended for five hours.