Some officials living near Denver's public school also said a body was found near a 17-year-old student's car on Wednesday night.
That body was charged with the felony charge of shooting two Colorado high school administrators.
The Park County Sheriff's Office said Wednesday night that a dead person was found lying near a vehicle.
But the Park County Sheriff did not say who the dead person was, but the Park County Sheriff said that the shelter-in-place warning had been lifted.
Denver police say the man's cause of death will be determined by the Park County Medical Examiner's Office.
Denver police have identified the dead man as Austin Lyle. That's because their vehicle was found in Park County
A call about a shooting was received at approximately 09:50 a.m. by emergency responders the day before.
And it also came to know that on Wednesday one person was undergoing surgery in the hospital and the condition of the other injured person was critical.