Cuba entered a third day without electricity after another outage Saturday evening set back efforts to restore power on the island, underscoring the challenges posed by decades-old, poorly maintained infrastructure.

Cuba's electrical grid failed thrice over the weekend, plunging millions into darkness. Despite efforts to restore power, two small protests erupted amid severe shortages. The government attributes the blackouts to deteriorating infrastructure,

Cuba's efforts to restore power to the island were derailed for a third time late on Saturday, Cuban authorities said shortly before midnight, leaving millions in the dark and raising fresh questions over the viability of the government's bid to reestablish electrical service.