Overview

• The Jefferson County Sheriff's Office says the stabbing occurred around noon and the injured ranger was taken to a hospital, with his condition not yet released.
• The suspect fled on foot and a large search is underway across the nearly 4,000-acre park southwest of Denver, with aerial footage showing heavily armed officers.
• Officials describe the suspect as a white man in his early 30s with brown hair, about 6 feet tall and 200 pounds, wearing a gray shirt and blue jeans.
• Authorities warn the public to consider the suspect dangerous and to report sightings by calling 911.
• Investigators are still determining what led to the attack and have not provided the total number of people injured.