Emergency services issued a red alert, the most severe warning, after Central America's most active volcano erupted on Monday morning, with conditions intensifying by nightfall.

MEXICO CITY - Guatemala's disaster reduction agency on Monday evening declared a nationwide orange alert as eruptive activity at the Fuego volcano continued to intensify.

Fuego is considered by seismologists to be one of the most active volcanoes in the world.

Guatemala declared a nationwide orange (danger) alert on Monday evening after a major eruption of Fuego, the most active volcano in Central America.