Madrid, April 28 -- Spain and Portugal have been hit by power outage on Monday, leaving millions of people without electricity. Reports indicate issues with the European electric grid, Euro News reported.

Official sources in Portugal told domestic media that the outage was nationwide, while similar reports have emerged from Spain. Barajas international airport in Madrid was left without power while telecommunications have also been impacted. Other airports in the region have also come ot a standstill.

Several passengers have been left stranded in the metros in the capitals of Spain and Portugal, with trains stuck in the tunnels between stations, Euronews Portugal reported.

The Spanish government has gathered for an emergency session at...