https://www.bbc.com/news/world-us-canada-62200507
The committee of state legislators highlighted a lack of leadership and urgency, describing a "lackadaisical approach" by authorities at the scene.
Nearly 400 officers rushed to the site, but police waited over an hour to confront the attacker.
The report was published on Sunday.
Edit Disclaimer: The BBC's take on it, not mine (didn't really follow what happened, got no opinion)