Colorado has sent Task Force 1 to Kerr County, Texas, to assist in searches and cleanup efforts along the Guadalupe River.

At a Wednesday morning press conference, Kerr County Sheriff Larry Leitha declined to answer a question about delayed emergency alerts, saying that an "after-action" would follow the search and rescue efforts. "Those questions are gonna be answered," he added.

FEMA records show officials in Kerr County, Texas, did not use FEMA's system to send warnings to phones in the hours as the flooding began on July 4.

There are questions over why oversight was eased at Mystic Camp as it expanded in a hazardous floodplain, the AP reported.

Over 12,000 volunteers have already assisted in Kerr County, according to the Texas Division of Emergency Management.

At least 129 people are dead from the devastating flooding in the Texas Hill Country. Kerr County was hit the hardest, with at least 103 deaths, including 36 children. President Donald Trump signed a disaster declaration for the county and the Federal Emergency Management Agency is on the ground there.

Exhausted volunteers were still trying to find dead bodies wiped out by the disaster in Sunday when they were told to evacuate via the new alert.