Cyclone Gezani kills at least 20 as it tears through Madagascar's port of Toamasina

At least 20 people have died after a powerful cyclone struck Madagascar, says the disaster authority in the Indian Ocean island.

Cyclone Gezani made landfall on Tuesday, hitting the island's main port, Toamasina.

Madagascar's disaster management office said there was "total chaos" - reporting that houses collapsed in the impact zone, where the bodies were found. Neighbourhoods were plunged into darkness as power lines snapped, while trees were uprooted and roofs ripped off.