The collapse of a hillside onto a town on the edge of Guatemala City killed at least 25 people and left hundreds missing on Friday, as rescue crews searched for survivors in homes buried by dirt and sludge.

Loosened by heavy rains, tons of dirt and trees tumbled onto Santa Catarina Pinula in a valley on the southeastern flank of the capital late on Thursday, flattening dozens of flimsy houses when many residents had gone home for the night.

An aerial video broadcast in Guatemalan media showed the tree-lined hillside laid bare above a huge mound of earth, foliage and debris that completely covered part of the town, which hugs the side of a river in a deep ravine.