The massive blackout is the fourth in the last six months as a severe economic crisis plagues the Caribbean country. The Ministry of Energy and Mines, in a statement on social media, attributed the latest outage to a failure at a substation in the suburbs of Havana,

Reports on social media from outlying provinces both east and west of the capital city suggested much of the country of 10 million people was without power.

Cuba has suffered a massive power outage affecting Havana and the country’s provinces that has left millions in the dark

Cuba suffered a general blackout caused by a crash of its national electricity grid, officials have said.Cuba' s national electrical grid has collapsed, the country's Energy and Mines ministry said, after a substation failed.