Washington (CNN) President Donald Trump tweeted Sunday morning that the US is working with the Thai government to rescue children trapped in a flooded cave.

"The U.S. is working very closely with the Government of Thailand to help get all of the children out of the cave and to safety. Very brave and talented people!" Trump tweeted.

The U.S. is working very closely with the Government of Thailand to help get all of the children out of the cave and to safety. Very brave and talented people! — Donald J. Trump (@realDonaldTrump) July 8, 2018

As Trump tweeted, images and reports were coming in of the rescue operation underway, including the news that some boys had been evacuated successfully from the cave in northern Thailand.

The 12 boys, all members of a soccer team, and their coach went missing last month. They were found in a cave several days ago where they have been trapped for more than two weeks.

The rescue operation Sunday comes amid mounting international concern about the safety of the group stuck deep in the flooded cave. A former Thai navy SEAL died on Friday in the cave in the effort to bring the group back safely.

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