REPORT: Uvalde sheriff chose to go to different crime scene as tragedy unfolded at school

UVALDE, Texas - Audio obtained by CNN shows Texas's top law enforcement agency knew children were trapped in Robb Elementary more than 30 minutes before anyone shot the gunman and rescued them.

According to a CNN report, Uvalde County Sheriff Ruben Nolasco chose to go to a different crime scene on May 24, the day of the mass shooting at Robb Elementary that killed 19 students and two teachers.

Instead of going to the scene of one of the worst mass shootings in United States history, Sheriff Nolasco went to the call for a woman shot in the head by her grandson - a crime scene that was under control, according to CNN. The sheriff stayed at that crime scene until the woman was loaded into an ambulance and taken to the hospital.

Body cameras show Nolasco finally arriving at Robb Elementary at 11:49 a.m. - 16 minutes after the shooter went inside the school, according to CNN.

Once on scene, Nolasco said that reinforcements from the Texas Department of Public Safety were on their way.

“DPS is coming,” he said. “I got the captain. We need to, we need to get this contained and see what, you know, who’s in charge.”

A text message conversation between Nolasco and DPS Captain Joel Betancourt, obtained by CNN, shows that they were in contact.

During the investigation, Nolasco complained about how poorly the radios worked around Robb Elementary, but CNN said body camera footage shows the radio dispatch of Khloie Torres' call from Room 112 can clearly be heard "within earshot of Nolasco" outside the building. Also, a Uvalde Police officer told Nolasco directly that “We’ve got a child on the line, 911,” but CNN said Nolasco failed to act, instead was focused on clearing classes that were not under immediate threat.

A CNN reporter caught up with Nolasco back in November and when asked if he thought his response to the mass shooting was adequate he said "Yeah, I do."