Authorities said on Sunday that at least 82 people, including 28 children, have died in flash floods in central Texas as frantic search efforts continued for missing children.

Officials in Kerr County said they are still looking for 10 children and a counselor who were at an all-girls camp when the Guadalupe River ran its banks and roaring waters swept campers away.

Gov. Greg Abbott said there are 41 people still not accounted for across the state and that number could increase, the Associated Press reported.

At least 43 fatalities have been reported so far in Kerr County, Sheriff Larry Leitha said on Saturday. The dead include 28 adults and 15 children, he told a news conference Saturday night.

Two of the deceased campers from Camp Mystic have been identified as Renee Smajstrla and Janie Hunt.

Parents have been posting photos of their missing daughters on social media in the hopes of finding them as soon as possible.

About 240 people have been rescued or evacuated as a result of the flooding, according to authorities.

In all, 82 people are confirmed dead and 10 children are still missing, authorities said.

President Donald Trump said on Sunday that he signed a major disaster declaration for Kerr County, Texas.

"These families are enduring an unimaginable tragedy, with many lives lost, and many still missing," Trump wrote in a post on Truth Social.