The dramatic and risky rescue at the Tham Luang cave in the northern province of Chiang Rai was launched on Sunday and four boys were brought out that day. They had been trapped inside the Tham Luang cave for more than two weeks.
"The first four boys' eyes are normal".
Jesada Chokdumrongsuk, centre, deputy director-general of the Public Health Ministry, speaks during a press conference at a hospital in Chiang Rai province, northern Thailand.
The first successes on Sunday offered hope of a fairytale ending to the ordeal.
Authorities have not confirmed the identity of the rescued boys.
Additionally, there was no heavy rain near the caves Monday morning, according to Jonathan Erdman, weather.com meteorologist, creating a break for rescuers who once feared the worst from monsoon rains.
Four divers who stayed with the group were still to emerge.. Other divers were on guard along the risky first kilometer of the passageway. In some places, the boys had to be carried under flooded areas, some only as narrow as 0.6 meter wide.
The head of the operation, Narongsak Osottanakorn, said a final operation would be "more challenging" because one more survivor would be brought out than the previous two operations, along with three Navy SEALs who have been accompanying them.
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Each of the boys, ages 11 to 16 and with no diving experience, was guided out by a pair of divers in the three-day high-stakes operation.
An worldwide team of rescuers has been in Thailand since the discovery of the stranded football team and their coach, assisting the Thai Navy SEALs in their rescue efforts. Some are not even strong swimmers, and have had to learn to dive in conditions that claimed the life of a former Thai Navy SEAL on Friday.
Narongsak would not identify the rescued boys. He said it was out of respect for the families whose sons were still trapped in the cave.
The boys and their coach, all from the "Wild Boars" soccer team, became trapped by rainy season floodwater on June 23rd when they had set out to explore the vast cave complex after soccer practice.
It ended with their fighting cheer, adopted from the US Navy: "Hooyah!"But bringing out the remaining four boys and their coach could take more than one operation, Narongsak warned".
He said they would need to keep at least two metres away for their boys for at least 48 hours, until "we are sure there is no infection, then they can visit them normally".
"Everyone is in a good mental state", he said but added psychologists will work with them.
Last week, Musk said he was sending teams to Thailand from his private space exploration firm, SpaceX, and engineering firm, Boring Co. which is developing tunneling systems for transport projects.