Hurricane Oscar’s arrival to eastern Cuba Sunday has exacerbated living conditions for millions of residents already facing days without power, as fresh attempts to restore much of the nation’s electric grid have failed.

Cuba's electrical grid collapsed again on Sunday, the fourth such failure in 48 hours, with a hurricane making landfall to compound the island's misery and threaten further havoc on its decrepit infrastructure.

Cuba's power grid has ground to a halt for a second time in as many days, leaving 10 million on the island without power and the Caribbean island in a growing sense of crisis.