Cuba's electrical grid collapsed Sunday for the fourth time in 48 hours, a major setback in the efforts to restore power to exhausted residents.

Cuba has had four electric grid collapses since Friday, and most of the country remains in the dark as slow progress is made to restore power.

Cuba's power grid collapsed on Sunday evening for the fourth time in two days, plunging much of the island nation into darkness as Hurricane Oscar made landfall in eastern Cuba as a Category 1 storm.