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.

At a hearing in hard-hit Kerr County, an emergency management coordinator for the first time explained his whereabouts when the Guadalupe River burst its banks.

The five-year-old plan, required by the state, detailed when additional monitoring was to take place and who was responsible for alerting the public to evacuate.