Texas Gov. Greg Abbott visited the all-girls retreat Camp Mystic late Saturday as the death toll from Friday's flash flooding of the Guadalupe River continued to rise through the weekend.

Rescue operations are ongoing in Central Texas after flash flooding along the Guadalupe River left 23 to 25 girls from Camp Mystic unaccounted for. Officials say dozens have died as catastrophic floods continue to ravage the Hill Country.

At least 59 people have died after heavy rainfall caused flash flooding in parts of central Texas on Friday, authorities have said.