Video. In Madagascar, roads are damaged and cities ravaged after the passage of cyclone Bastsirai

Cyclone Batsirai swept out of Madagascar on Monday after killing 20 people, displacing 55,000 and devastating the drought-hit island's agricultural heartland, leading the UN to warn of a worsening humanitarian crisis.

The cyclone first hit a sparsely populated agricultural area in the country's east on Saturday, before later weakening. The eastern city of Mananjary was "completely destroyed," a resident named Faby said.