A scathing report released Sunday by a Texas House committee investigating the Uvalde school shooting blamed multiple failures by those in positions of power – including nearly 400 law enforcers who converged on the scene – for not halting the massacre.

The preliminary report describes “systemic failures and egregious poor decision making”: how police disregarded department active-shooter training, how the school district did not adhere fully to its safety plan and how the shooter’s family did not recognize warning signs before the rampage.

“With hindsight, we could say that Robb Elementary was not adequately prepared for the risk of a school shooter,” Texas state Rep. Dustin Burrows, the committee’s chair, said at a news conference Sunday.

The committee held closed-door meetings over the past month investigating the shooting that left 19 children and two teachers dead on May 24. Outrage skyrocketed over the response of authorities who waited more than an hour before breaching a fourth grade classroom – even as terrified students dialed 911 for help.

The report – the most complete account yet of the haphazard response to the massacre – had swift fallout: Lt. Mariano Pargas, a Uvalde Police Department officer who was the city’s acting police chief during the massacre, was placed on administrative leave after the report was released. 

‘THEY WILL BE REGRETTING THEIR ACTION FOREVER’:Experts say Uvalde shooting response went horribly wrong

Uvalde Mayor Don McLaughlin also announced Sunday that the city was releasing body camera footage from Uvalde police officers related to the Robb Elementary shooting. 

The Austin American-Statesman, part of the USA TODAY Network, and TV station KVUE exclusively obtained and released hallway surveillance video last week of the shooter and responding law enforcement officers.

Families of the victims received the committee’s report Sunday, according to committee chairman Rep. Dustin Burrows. 

‘Regrettable culture of noncompliance by school personnel’: What’s in the report?

The nearly 80-page report details numerous “shortcomings and failures” by the Uvalde school district and various law enforcement agencies and officers.