More than 160 people are known to be missing after devastating floods swept through Central Texas over the July Fourth weekend, Texas Gov. Greg Abbott (R) said Tuesday — raising the possibility that the death toll could surpass 200 in what is already one of the deadliest flood events in the past five decades.

At least 27 campers and counselors were killed at Camp Mystic during the devastating Texas floods. Some are still missing.

A July Fourth weekend deluge in Texas caused catastrophic flash flooding that has killed at least 104 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.