Heavy rains unleashed a “catastrophic” and deadly flood Friday on the Guadalupe River in Central Texas, prompting evacuations and a frantic search for missing people. At least 32 people were killed in the flood, officials said Saturday afternoon, as both state and county authorities emphasized many unknowns remain.

A July Fourth weekend deluge in Texas caused catastrophic flash flooding that has killed more than 80 people. Camp Mystic in Kerr County says Monday morning that it is “grieving the loss” of 27 campers and counselors as the search continues for victims of the disaster.

Flash floods in Texas killed at least 82 people over the Fourth of July holiday weekend and left others still missing, including girls attending a summer camp. The devastation along the Guadalupe River,