Millions of people in Spain, Portugal and parts of southern France lost power on Monday following a "severe disruption" in the European electrical system, the Spanish prime minister said. The cause of the disruption is still unknown,

Millions across Spain, Portugal, and parts of France were thrown into chaos Monday after a massive power outage — blamed on a “rare atmospheric phenomenon” by some officials— crippled transportation networks,

Spain, Portugal and France are popular destinations among British tourists, with millions visiting all three countries each year. On Monday, the Iberian peninsula was hit with power cuts that are likely to affect holidaymakers’ plans.