At least 15 people were killed and dozens are missing after flash floods left hundreds of houses buried in mud on the Indonesian island of Sulawesi. A search and rescue operation is underway to find those feared missing or swept away by floods and mud after three rivers overflowed due to torrential rains. As many as 2,000 residents were taking refuge at temporary shelters in North Luwu, but the floods and mud were hampering efforts to distribute supplies.