CNN reports Hundreds of people are missing and thousands more have been displaced after a dam collapsed in southern Laos, causing flash flooding across six villages, according to the state news agency. Tthe Xepian-Xe Nam Noy hydropower dam had collapsed on Monday, causing several deaths and leaving more than 6,000 people homeless. The disaster is so far known to have affected at least six villages in the Sanamxay district of Attapeu province.