At least 24 people are dead following extreme flooding that slammed Texas Hill Country overnight on Friday, according to officials. At least 20 girls from a summer camp remain missing.

Authorities said at least 24 people have died in flooding around Kerr County, Texas, and officials are still performing water rescues.

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.