Nearly 25,000 people have been evacuated to makeshift camps after floods ravaged eastern Myanmar, an official says, as relief teams struggle to reach remote areas inundated by water.
Floodwaters have risen dramatically after several days of heavy rain in Karen State forcing thousands to flee to nearly 80 relief camps, Chum Hre, director of the social welfare, relief and resettlement department told AFP on Wednesday.
"Altogether 24,499 flood victims have been evacuated" in Karen State, he said, adding hundreds more had been displaced in Mon and Rakhine states.
"It is very difficult to reach some of the disaster-hit places because of the bad weather and landslides," he said, adding that helicopters had been deployed.
Heavy rains also inundated areas across the border in Thailand.
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Seven Thai provinces remained flooded on Wednesday, the Interior Ministry said in its daily update.
Three people have died since Monday after they were hit by trees felled by fast-moving water, it added.
In Thailand's western town of Mae Sot, which borders the flood-hit area of Myanmar, waters have receded in the town centre but remain high in outlying areas, especially near the frontier checkpoint.
"The situation has returned to normal in Mae Sot city," Pramote Chantasri, of Mae Sot City municipality told AFP.
"The worst was on Monday after four days of heavy rain in the mountains," he said, adding the bridge between the two countries remains open.
In Vietnam, one person was missing after flash floods, according to the Central Steering Committee for Storm and Flood Control.
The fatalities included a farmer who drowned while collecting driftwood in a stream and a 22-year-old man who was swept away by raging floodwaters as he drove home.
The floods destroyed more than 200 houses, damaged 3700 hectares of rice and vegetables, and killed 143 cattle. The damage was estimated at $US5 million ($A5.54 million), Vietnamese authorities said.
In Indonesia's Ambon City and Gorontalo Province on Sulawesi, 13 people have died since last week.
In Ambon, the capital of Indonesia's Maluku Province, rescuers were searching for five people still missing after floods and landslides killed nine people on Tuesday.
About 3000 people were displaced and 80 homes were heavily damaged, said Sutopo Nugroho, spokesman for the National Disaster Management Agency.
"Rain is still falling so there's still risk of further flooding," Nugroho said.
Floods and landslides also hit Lampung province on Sumatra island and Gorontalo, killing four people, with three still missing since last week.
