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.