MAPUTO, Mozambique — At least 56 people have been killed in Mozambique since Monday, a nongovernmental organization, Plataforma Decide, said Wednesday as police officers and protesters clashed in the latest wave of unrest over a presidential election that demonstrators claim was rigged by the governing party.

Prisons have been attacked and hundreds of inmates freed, a police commander, Bernardino Rafael, said at news conference Wednesday. At Maputo Central Prison, which housed 2,500 inmates, more than 1,530 prisoners were freed, he said. In a confrontation with guards trying to prevent detainees from fleeing, he said, 33 prisoners were killed and 15 others wounded.

The political unrest comes as the country is working to recover from Cyclone Chido. Mozambique’s death toll from the storm has risen to 120 since the storm made landfall more than a week ago, according to the country’s National Institute for Natural Disasters.

The storm’s death toll has nearly quadrupled from the initial reported. — The New York Times