(CNN)Twenty people were killed when torrential rains and flooding triggered mudslides that wiped out part of an elementary school in Indonesia’s North Sumatra, officials said.
At least 11 of those who died in the flooding Friday were students, according to Sutopo Purwo Nugroho of the disaster mitigation agency. Some students are still missing. The flooding was in Mandailing Natal, North Sumatra.
Some of the students were buried under debris and mud after the Aek Saladi river overflowed, according to state media.