Narongsak said rescuers would meet Monday evening to plan for the next operation. The rescue efforts resumed Monday following a 10-hour pause that was called last night to replenish scuba tanks with oxygen.
Reuters could not confirm the identity of the two people brought out in the evening and the chief of the rescue mission, Narongsak Osottanakorn, asked about the two, declined to comment, saying a news conference would be held soon.
A massive worldwide search operation was launched and it took 10 days to locate the boys, who had taken shelter on a dry slope deep in the complex.
It is unclear whether parents have been informed which of the children have been rescued so far.
Narongsak also said Monday that the condition of the five remaining people in the cave is "still good".
Last week, Musk sent engineers from two of his companies, SpaceX and Boring Co., to assist Thai officials in the rescue effort, which comprises a large team of global diving, engineering and medical experts, among other professionals.
By 12.30pm BST the sixth and seventh boys were freed and the eighth was confirmed out at about 1pm BST.
They are part of a youth soccer team known as the Wild Boars.
The photo, posted on the Thai Navy SEAL page on Sunday, and has received over 60,000 shares.
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Cheers were heard outside the cave as reports emerged that four more boys had successfully made the unsafe journey to the surface in Khun Nam Nang Non Forest Park.
The rescue effort has proved to be a monumental challenge.
Divers from Thailand and overseas, including the United States, China, Europe, and Australia have helped retrieve the boys, who are between the ages of 11-16. 'Doctors have told us we must be careful about the food that is given to them because they are fragile after starving for many days.
Officials said Monday that the first four rescued boys were all "good and happy" after spending 16 days trapped inside the cave but that they were complaining of being "hungry".
The boys most up to the challenge of diving in the murky waters would be the next to be retrieved, after the weakest were reportedly saved first.
They were found more than a week later, stuck on a small, muddy patch deep in the cave's network of chambers.
'A flash flood because of sudden heavy rain locked them in'. Wearing full-face masks, the boys either swam or were pulled along.
He didn't comment on the health of the boys or how well the operation had gone. Two divers were assigned to each child to help them navigate the risky, narrow passageways.
They were to be strapped to a "buddy", the leading diver, by a tether and dragged along. If not, the inventor already has other ideas for the device. Locals were required because none of the foreigners speak Thai and communication before and during the dive was key.
Rescuer dies working to free trapped boys in Thai cave
The boys and their coach had been stranded in Tham Luang Nang Non when they went exploring in the cave after a scrimmage June 23. Monsoon flooding cut off their escape and prevented rescuers from finding them for nearly 10 days, CBS News reported.
Defibrillators were also put in place in case the rescue should take a bad turn.
Musk said it would take 17 hours to deliver the mini-submarine.
Dr Harris had been due to travel to Western Australia on Friday...
"So, it's not so much how they'll be feeling in the immediate aftermath - we would expect to see some strong reactions - or not - it depends upon many factors I don't know about".
Monsoon rains have started falling again, causing water levels inside the cave to rise, squeezing the boys in an ever shrinking space inside the cave, and causing oxygen levels to drop.
Musk said the aluminum shell of the so-called submarine had high thermal conductivity, meaning it is able to allow heat to pass through it easily, and therefore provide insulation to the person inside. "If we bring five we have to change the plan".
Water levels inside the cave are fluctuating, making it hard to know for sure how long some of the dives will take. He had said fresh air tanks needed to be laid along the underwater route.
"We lost one man, but we still have faith to carry out our work", Navy SEAL commander Apakorn vowed.
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Trade Representative Lighthizer "to identify $200 billion worth of Chinese goods for additional tariffs at a rate of ten percent". That conjures the image of this being a cool, calm, collected game of chess on both sides: Washington and Beijing .