A grim search for the missing continued on Sunday in southern Colombia after surging rivers sent an avalanche of floodwater, mud and debris through a small city, killing at least 200 people and leaving many more injured and homeless.

People prised up piles of rocks and wooden planks that entombed homes.

Streets were covered in thick sand, mud and tree limbs from the rivers and rainforest that surround Mocoa, in the mountainous region along Colombia’s southern border.