All key leading officials from the Texas county hardest hit by the July 4 flash flooding that killed at least 136 people were absent from an emergency briefing call held before the tragedy unfolded, questioning from state lawmakers on Thursday revealed.

Kerr County's emergency manager testified at a hearing Thursday that he was sick and asleep when the deadly flash floods hit Central Texas on July 4, killing at least 135 people.

For the first time since catastrophic flooding killed more than 100 people in Kerr County, Texas, the county emergency management director conceded that he was sick and asleep as the water rose to historic levels on the Guadalupe River.