Case DIH-2240
Dennis John Tierney
A low-level dealer in Summit County, Colorado, who sold heroin to a 32-year-old man found dead in his apartment on February 6, 2018, after taking fentanyl-laced heroin; their text messages showed prices and Tierney's trips to Denver for heroin, and days before the death Tierney warned him the product was "fire spitter top shelf" and dangerous.
- Court
- State, Summit County
- State
- Colorado
- Year of death
- 2018
- Year sentenced
- 2018
- Drugs
- Heroin laced with fentanyl
- Conduct
- Commercial sale
- Relationship
- Not reported
- Conviction
- Criminally negligent homicide; unlawful distribution of heroin (plea)
- Plea or trial
- Plea
- Sentence
- 3 years in the Colorado Department of Corrections
- Found through
- State prosecutor and news search, October 2026
This case was brought under Colorado law. For what that law says, see Colorado in the state law guide.
Sources
- summitdaily.comSummit county drug dealer sentenced to 3 years in prison following breckenridge overdose death
Sources checked 8 October 2026. If something here is wrong or out of date, please tell us.