At least 10 people are dead and hundreds are missing following alandslide in central Sri Lanka, officials tell the BBC.
The landslide, which came after heavy monsoon rains, engulfed about 140 houses in Badulla district, officials said.
Security forces have been mobilised in search and rescue operations.
Mudslide warnings were issued after much of Sri Lanka was lashed by heavy rain in the past few weeks.
The mudslide hit the Meeriyabedda tea plantation near the town of Haldummulla, about 200 km (120 miles) east of the capital Colombo, on Wednesday at 07:30 local time (02:30 GMT).
Ten people have been confirmed dead and more than 300 are missing, Disaster Management Centre spokesman Sarath Kumara told the BBC.
'Thirty feet of mud' The weather has now cleared and army, air force and police personnel are searching for survivors, the BBC's South Asia correspondent Sanjoy Majumder reports.
About 500 military personnel are said to be involved in the search.
Sri Lankan President Mahinda Rajapaksa tweeted that heavy machinery had been deployed to speed up rescue efforts.
Local MP Udith Lokubandara told the BBC that bad weather conditions were affecting the operations.
"The tragedy is that most of the parents left their children at school and went back to their homes to see if they can salvage any of their belongings when this happened," he said.
"It is a very sorry situation because there are many children who have become orphans."
Major General Mano Perera, the top military official in the area, said in quotes carried by AFP news agency that "some houses have been buried in 30 ft (9m) of mud".
Officials say an area of about two kilometres (one mile) has been affected by the landslide, Sri Lankan newspaper Daily Mirror reports.
Sections of several national highways have been washed away by the rains, reports say.
One woman who survived told local media: "I was under the rubble and some people took me out... my mother and aunt have died."
In June, monsoon rains triggered landslides in Sri Lanka that killed at least 22 people and forced thousands from their homes.