At least 20 girls are missing from an all-girls Christian summer camp in South Texas after catastrophic floods struck the area in the wake of severe overnight storms.

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

Heavy rains are unleashing a “catastrophic” and deadly flood of Texas’ Guadalupe River on Friday. People have died in Kerr County in Hill Country and roads are washed out in Kerrville in Hill Country, authorities said.