Thailand Live Updates: Rescue operations for 12 boys trapped in Tham Luang cave begin

A team of boys and their coach have been trapped for more than two weeks in Tham Luang cave in Thailand.

Elite divers on Sunday began the extremely dangerous operation to extract 12 boys and their football coach who have been trapped in a flooded cave complex in northern Thailand for more than two weeks, as looming monsoon rains threatened the rescue effort.

The "Wild Boars" team has been stuck in a cramped chamber several kilometres (miles) inside the Tham Luang cave complex since June 23, when they went in after football practice and were hemmed in by rising waters.

Their plight has transfixed Thailand and the rest of the world, as authorities have struggled to devise a plan to get the boys and their coach out through twisting, narrow and jagged passageways that in some places are completely flooded.

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"Today is the D-day. The boys are ready to face any challenges," rescue chief Narongsak Osottanakorn told reporters near the cave site as weather forecasters warned of more monsoon rains late on Sunday that would cause more flooding in the cave.

Narongsak said the first boy was expected to be brought out of the cave by around 9:00 pm (1400 GMT), meaning the trip would take around 11 hours.

The boys, aged from 11 to 16, and their 25-year-old coach were found dishevelled and hungry by British cave diving specialists nine days after they ventured in.

The death of a former Thai Navy Seal diver who ran out of oxygen in the cave on Friday underscored the danger of the journey even for adept professionals.

Saman Kunan had been trying to establish an air line in a flooded area with oxygen tanks when he passed out and perished.

After a short deluge of rain on Saturday night and with more bad weather forecast, Narongsak on Sunday said authorities had to act immediately.

"There is no other day that we are more ready than today," he said. "Otherwise we will lose the opportunity."

Between the operating base manned by Thai Navy Seals inside the cave and the trapped boys are twisting, turning cave passageways with torrents of water gushing through.

The water in the cave is muddy and unclear, with one diver comparing it to a cafe latte. Ropes have been installed to help guide the boys through the darkness.

Narongsak said Sunday two divers would accompany each of the boys out of the cave.

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