Electricity has been restored to half of Havana, the Cuban capital's power company reported Monday, four days after the start of a nationwide blackout that the authorities have struggled to address. The government has said that electricity is expected to be restored to most of the country by the end of Monday.

After electricity was partially restored in Cuba following an island-wide blackout, the electrical grid collapsed a second time, causing widespread alarm. Journalist Ed Augustin told NBC News that while power is gradually being restored in some areas,

Cuban President Miguel Diaz-Canel warned Sunday that his government would not tolerate public disturbances during the nationwide power outage which the authorities are struggling to resolve.