COLOMBO, Sri Lanka - Helicopters searched for people marooned three days after rain-triggered floods and mudslides inundated Sri Lankan neighborhoods and killed at least 169 people.

With more rain expected, rescuers raced on Monday to evacuate people from the most vulnerable areas. Already more than 100,000 had taken shelter in 339 relief camps set up in the south and west.

Army boats skimmed waterlogged village streets, while flood victims waded through brackish waters to Army trucks carrying relief supplies.