An estimate of 20 girls remained missing after deadly flooding caused “destructive” floods at Camp Mystic in Hunt, Texas, Lt. Gov. Dan Patrick said.

Camp Mystic, a private Christian summer camp for girls, had to be evacuated overnight after “catastrophic” flooding along the Guadalupe River.

Extreme flooding left at least 24 dead in Kerr County, and between 23 to 25 children missing from Camp Mystic, a Christian girls camp.