Photographer Rudy Giron posted this image of the Volcan de Fuego today.
Amateur photographer Pedro Ruiz says he filmed Guatemala's Volcan del Fuego - or 'Volcano of Fire' - erupting today at 10.51am local time (5.51pm BST).
Teresa Marroquin, disaster coordinator for the Guatemalan Red Cross, told the AP news agency that the organization had set up 10 emergency shelters and was sending hygiene kits and water.
"There are lots of respiratory problems and eye problems," she said.
A Guatemalan emergency official has told Associated Press that more than 33,000 people have been evacuated from an area near an erupting volcano.