As first responders continue to rescue people stranded by the torrential flooding that descended on central Texas Friday, dozens of people are facing a parent’s worst nightmare: Their children are missing.

A total of 27 children were missing as of Saturday evening from Camp Mystic in Kerr County, according to officials. The Christian all-girls camp is located along the Guadalupe River – which rose more than 20 feet in less than two hours overnight into the July Fourth holiday.

The devastating storm took the lives of at least four campers, whose families confirmed their deaths to CNN.

Other families are desperately awaiting news of their loved ones.

Carrie Hanna told CNN her 8-year-old daughter, Hadley, is still missing.