GUATEMALA CITY (AP) — Guatemala remained on alert Tuesday after evacuating hundreds of people following an eruption of the Fuego volcano, which is part of the Pacific Ring of Fire and one of Central America’s most active volcanoes.

The country’s disaster management agency said 659 people were evacuated from eight villages in the danger area and are being housed in nearby shelters.

The eruption started on Monday morning, with videos showing clouds of gas and ash above the volcano as lava and pyroclastic flows roll down.