Four more of the boys trapped for over two weeks in a flooded cave in northern Thailand were brought out on Monday, an official said, bringing to eight the number extracted in a high-stakes rescue operation.

“The eighth person is out and the operation is done for today,” Sitthichai Klangpattana, flag officer to Thailand’s navy SEAL commander, told The Associated Press. “Four boys were brought out today.”

He didn’t comment on the health of the boys or how well the operation had gone.

On Sunday, when the high-risk rescue operation to rescue the 12 boys and their coach began, teams of divers brought out four of the boys but waited several hours before confirming their safe rescue.

After Monday’s rescue effort, four boys and the coach were still inside the cave.

Chiang Rai acting Gov. Narongsak Osatanakorn said earlier Monday that the second phase began at 11 a.m. and authorities “hope to hear good news in the next few hours.”

“All conditions are still as good as they were yesterday,” Narongsak told a news conference. “The boys’ strength, the plan - today we are ready like before. And we will do it faster because we are afraid of the rain.”

Authorities have been rushing to extract the boys, ages 11-16, and their coach from the cave as the annual monsoon bears down on the mountainous region in far northern Chiang Rai province. Workers have been laboring around the clock to pump water out of the cave, and authorities said Monday that heavy downpours overnight did not raise water levels inside.

The four boys pulled from the cave Sunday in an urgent and dangerous operation that involved them diving through the cave’s dark, tight and twisting passages were happy and in good health, authorities said.

“This morning they said they were hungry and wanted to eat khao pad grapao,” Narongsak said, referring to a Thai dish of meat fried with chili and basil and served over rice.

4 more boys brought out of flooded Thai cave