Landslides have killed at least 100 people in south-west Colombia and left 200 injured and as many missing.
Hours of heavy rains overnight caused rivers to burst their banks, flooding homes with mud in Putumayo province.
An unknown number of people are missing. One army officer said the main local hospital was struggling to cope.
President Juan Manuel Santos, who is travelling to the area, said troops had been deployed as part of a national emergency response.
The region’s governor, Sorrel Aroca, told Colombian media that whole neighbourhoods had been buried.
Jose Antonio Castro, mayor of the provincial capital Mocoa, told Caracol radio that the town was “totally isolated”, without electricity and water.
President Santos said on Twitter that he was taking charge of the situation and that Colombians were in mourning for the victims.
