Other children held in detention centers are from Indonesia (422), Philippines (295), Cambodia (121) and 267 from other countries, a Malaysian MP says.
A village in Tonzang, in the north of Chin State, was buried by a mudslide, though no one has been reported killed or injured.
The entire population of Kahngen village, some 127 people from 40 houses, has abandoned their homes due to flooding and landslides and sought refuge in nearby Tedim.
Out of a total population of 480,000, only 262,000 names appear on voter lists. Authorities blame media and CBOs for not informing the public.
At least 69 children infected with diarrhoea have been admitted to the Hakha General Hospital this month alone.
Chin NGO says troops from Light Infantry Battalion 289 extorted 180,000 kyat (US$180) from a group of ten Baptist evangelists in Paletwa Township.