Residents and security personnel of Huaraz, Ancash, Peru have been working to clear debris and mud after a landslide killed two people, Reuters reports.

The landslide was caused by a glacial lagoon that overflowed into the Casca River, according to the National Institute for Research on Glaciers and Mountain Ecosystems (INAIGEM).

According to INAIGEM, there are 160 lagoons at risk of overflowing in the Ancash region.