Tropical Storm Oscar doused Cuba on Monday, three days after a massive power failure plunged more than 10 million people into the dark as the island worked to restore its decades-old power grid.

Tropical Storm Oscar was heading toward the Bahamas late Monday after dumping heavy rain across eastern Cuba. A tropical storm warning was in effect for the central and southeastern Bahamas.

Cuba's capital remained largely paralyzed on Monday and the rest of the island braced for the fourth night of a massive blackout that has generated a handful of small protests and a stern government warning that any unrest will be punished.