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.

The Cuban president says the deaths occurred in an area that saw historic flooding due to the storm.

The hurricane center said Oscar is expected to maintain tropical storm strength as it exits Cuba later Monday night. Its next stop, according to the latest forecast, is the southern and eastern Bahamas on Tuesday. It could strengthen a bit, forecasters said, but it’s still expected to be a tropical storm when it strikes.