While I have been able to find several cases in Colorado which fit the anomalous criteria, I have only been able to collect concrete evidence of one, which I will document on this page.
A 38 year old single man disappeared, and biomaterial emitting strange sounds was found in his empty apartment. He was employed as a janitor at a local elementary school. Besides a recording of the sounds, information is sparse. According to his parents, whom he rarely saw, he loved stargazing, and had struggled with addiction in recent years.