Roughly eight months after a shooting at Evergreen High School that left two students critically wounded and the shooter dead, a motive has still not been clearly established . But a report released this week sheds some light on a few possible motives. Desmond Holly , 16, entered the school on Sept. 10 armed with a Smith & Wesson .38 revolver and opened fire around lunchtime. A 664-page investigative report by the Jefferson County Sheriff’s Office on the shooting, obtained by The Denver Gazette, paints a chaotic picture of that day while also providing possible insights into Holly’s motives for the shooting and his mental state leading up to it. Desmond Holly, 16, was identified as the suspect in the Evergreen High School Shooting. He died from self-inflicted gunshot wounds. (Courtesy Jefferson County Sheriff’s Office) The following details are from the report: Students and teachers told investigators they first heard gunshots around 12:30 p.m. that Wednesday, which sent the entire school into a panic.…