Asked whether the remaining four "Wild Boars" team members and their coach would come out at the same time in the next rescue effort, he said: "It depends on the plan". There are reports the divers re-entered the cave around 1pm local time Monday.
The same divers who took part in Sunday's rescue of four boys trapped in a flooded cave will also conduct the next operation as they know the cave conditions.
A source involved in the rescue mission who saw two of the four boys walk out of the cave told Reuters that they looked exhausted but healthy, adding that one even looked "vivacious and fresh".
He told reporters the four rescued boys were taken to the hospital in the town of Chiang Rai, the provincial capital, for evaluation, and the next phase of the operation would resume after about 10-20 hours. In some places, the boys had to be carried under flooded areas, some only as narrow as 0.6 meter wide.
The Thai official leading the operation to save the 12 boys and their coach from the flooded cave in northern Thailand said the rescue has been going "better than expected".
None of the boys' identities have been publicly revealed.
Thai officials started the rescue operation on Sunday as weather experts predicted more rain in the coming weeks. Two divers were assigned to each child to help them navigate the risky, narrow passageways.
Beneath the earth in South Australia's south-east is our nation's most complex known cave system, Tank Cave, a series of passageways about seven kilometers in length.
Rescuers need to hold the boys' oxygen tanks in front of them and swim pencil-like through submerged holes.
Key among them is Dr. Richard Harris, a diver who has experienced the grief of a treacherous cave system before. The race to save their lives before the monsoon rains hit have since become an worldwide effort!
A heavy but brief downpour hit the area Monday morning, but authorities said that did not change the water level in the cave, as workers continue to pump water out.
All the eight boys have been admitted to Chiang Rai Prachanukroh hospital, where they have been put in quarantine to guard against possible infections.
"This morning they said they are hungry, and they wanted phad kra pao", he said.
Thai public television has aired live video of a medivac helicopter landing close to a hospital in the city of Chiang Rai, near the site of the cave where a youth soccer team has been trapped for more than two weeks.
"The next step is to make sure those kids and their families are safe because living in a cave has a different environment which might contains animals that could transmit any disease", a hospital statement said.
In the clip shared by Musk above, you can see the submarine being tested by a team of divers at a high school pool in Los Angeles. Visitors would need to wear sanitized clothes and stay two meters away from the children.
The rescue teams now needed at least 10 hours to prepare for their next operation, involving about 90 divers in total, 50 of them from foreign countries, he said. That's how deadly the rescue mission is! .
Trips from the entrance to where the team is trapped and back to the entrance take about 11 hours and include walking, wading, climbing and diving, the BBC reported.
Billionaire Elon Musk's "mini" submarine developed by his SpaceX team is set to arrive in Thailand around 11 p.m. local time, 12:00 p.m. ET on Monday, according to his tweet.
Why higher unemployment signals a strengthening economy
The unemployment rate ticked up to 4% from 3.8%, but this was because more people entered the labour force looking for work. Today's data is another proof that 2018 will be the 8th consecutive year with an employment growth of at least 2 million.
Oil falls as Trump urges OPEC to reduce prices
The oil boss also accused Trump of fomenting tensions in the Middle East, specifically by pitting Iran against Saudi Arabia . Some members should remember that the United States is defending them for little reciprocal benefits, he added.
Trump Zeros in on Supreme Court Pick
If Trump is looking to make history, Barrett could have some appeal. "As you know there is now a vacancy on the Supreme Court ". In addition, she is the youngest of the leading candidates, and Trump has said he wants his nominee to serve for decades.