The death toll from devastating floods in the Texas Hill Country rose to 24 Friday night, officials said, as the search for more than 20 people missing from a girls summer camp continued through the night.

Texas Lieutenant Governor Dan Patrick said authorities were searching for 23 girls listed as unaccounted for among more than 700 children who were at a summer camp when it was swept by floodwaters.

Local and state law enforcement in Kerr County were working to rescue and evacuate residents Friday as a flash flooding emergency led to dozens of fatalities. At least 20 girls were reported missing from a summer camp in the area,