Heavy floods and mudslides have left dozens dead and tens of thousands homeless in Southeast Asia, as torrential rains from Typhoon Usagi pummeled Vietnam, Thailand, Laos, and the Philippines. The death toll from Saturday's floods in northern Thailand has risen to 74.

Mass cremations for flood victims began in northern Thailand. Rescuers, using dogs and bulldozers, continue to search for survivors among the mud and debris. Amid the wreckage, rescuers found a young boy who survived by clinging to bamboo stalks for hours, after being swept away from his home.

In the worst hit province, Phetchabun, about 300 kilometers north of Bangkok, at least 300 homes were swept away by the raging waters early Saturday. At least 1,000 people were left homeless and more than 90 others are missing.

Thai Prime Minister Thaksin Shinatwara visited the area Sunday and promised aid to the flood victims.

In the Philippines, several people were killed and thousands others fled their homes as heavy rains triggered floods and mudslides in southern Philippines.

Heavy rains also left a wake of destruction in Vietnam and Laos. Vietnamese authorities say the rains caused millions of dollars in damage to agriculture and infrastructure.