Texas parents frantically posted photos of their young daughters on social media with pleas for information as at least 23 campers from an all-girls summer camp were unaccounted for after floods tore through the state’s south-central region overnight.

Rescue operations are ongoing in Central Texas after flash flooding along the Guadalupe River left 23 girls from Camp Mystic unaccounted for. Officials say dozens have died as catastrophic floods continue to ravage the Hill Country.