A massive electrical failure has left all of Argentina and Uruguay without power, according to a major Argentine electricity provider.
Authorities say the cause of the blackout is still unclear.
Argentine media said the power cut occurred shortly after 07:00 (11:00 BST), causing trains to be halted and failures with traffic signalling.
It came as people in parts of Argentina were preparing to go to the polls for local elections.
A massive electrical failure has left all of Argentina and Uruguay without power, according to a major Argentine electricity provider. Authorities say the cause of the blackout is still unclear. Argentine media said the power cut occurred shortly aft