C'mon, it was one paragraph in the report told from the father of one of the victims point of view. Sure, it's reliable in the sense that the arresting officer accurately put what the father said in the report. Is it reliable in the sense of that's how events actually happened? We have no idea. No one does. The rest of the statements, from the victims, from the Kromers, were redacted.
There is no accurate/reliable description currently out there from anyone who was actually at the scene.