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 reported 'total chaos,' stating that houses collapsed in the impact zone, where the bodies were found. Neighborhoods were plunged into darkness as power lines snapped, while trees were uprooted and roofs ripped off. The cyclone's landfall is likely to have been one of the most intense recorded around Toamasina in the satellite era, according to CMRS cyclone forecasters on France's Reunion island. The National Office for Risk and Disaster Management reported that more lives were lost due to house collapses. Winds reached 250 km/h (155 mph) as Cyclone Gezani struck Toamasina - the country's second-largest city. The head of disaster management at the Action Against Hunger aid agency, Rija Randrianarisoa, mentioned that '90% of house roofs have been blown off, entirely or in part.' Madagascar's disaster management office has evacuated dozens of injured people and hundreds of residents from a district around Toamasina, home to 400,000 people. Residents in and around Toamasina described scenes of chaos as the cyclone made landfall. Gezani is the second cyclone to hit Madagascar this year, following tropical cyclone Fytia, which killed 14 and displaced over 31,000 people. Ahead of the cyclone's arrival, officials shuttered schools and prepared emergency shelters. As of Wednesday morning, Gezani was weakening into a moderate tropical storm, moving westward inland, about 100 km north of the capital, Antananarivo.