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.

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.