Colorado's 17th Judicial District Attorney's Office

Serving the Residents of Adams and Broomfield Counties

District Attorney Brian S. Mason

A Message from the District Attorney

Welcome to the District Attorney’s Office for Colorado’s 17th Judicial District.  It is an honor to serve this community as your District Attorney. 

The District Attorney’s Office is focused on two primary goals: keeping the community safe and making our criminal justice system better. We do this by pursuing justice with integrity in every case and by holding ourselves to the highest standards of ethics and excellence. 

There are many challenges facing the criminal justice system and our community right now. Here at the District Attorney’s Office, we are committed to the following overarching goals: 

  •       Fighting for the vulnerable
  •       Seeking justice for victims      
  •       Prosecuting offenders who commit violent crimes, domestic violence, human trafficking, drug trafficking, and other serious crimes that harm our community 
  •       Acknowledging issues of racism, both implicit and explicit, within our system  
  •       Focusing on education, outreach, and crime prevention, not just prosecution
  •       Exploring alternatives to incarceration and keeping people out of the criminal justice system when diversion programs and other alternatives will keep the community safe      
  •       Addressing the mental health crisis in the criminal justice system and our profession.  

The professional staff of the District Attorney’s Office works tirelessly, day and night, to serve this community with integrity and professionalism. In short, we are committed to doing the right thing – at all times – in every case. That is our pledge. And we will do so with an abiding commitment to justice, integrity, fairness, empathy, transparency, courage, and the rule of law.  

Meet Brian Mason Brian Mason’s Inaugural Address
Fight Against Fentanyl

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Prosecution News Updates

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Sexual and Domestic Violence

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Resources for Victims

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Mental Health 

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Financial Crimes

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Our Mission and Commitment to You:

The 17th Judicial District Attorney’s Office is committed to seeking and pursuing justice on behalf of victims of crime through the fair and ethical prosecution of those who commit offenses in our community. With a focus on education, treatment, and a reduction in recidivism, the District Attorney’s Office will also work vigorously to reform the criminal justice system to better serve the citizens of Adams and Broomfield Counties. 

Latest News and Press Releases

17th Judicial District Attorney’s Office Files Murder and Attempted Murder Charges Related to Two Shooting Incidents in Adams County
Posted Mar 22, 2023
Brighton, CO —Today, the 17th Judicial District Attorney’s Office is announcing the filing of Murder and Attempted Murder charges related to two separate shooting incidents that occurred on March 15th
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Defendant Convicted of Murder for Fatally Shooting Girlfriend in Adams County
Posted Feb 23, 2023
Brighton, CO — Today, 17th Judicial District Attorney Brian Mason is announcing the Murder conviction of Jeffrey Aschenbrenner, 34, after a five-day jury trial in Adams County District Court.  On N
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Adams County Sex Assault on a Child Defendant in Colorado Custody After Nine Years on the Lam in Morocco
Posted Feb 13, 2023
Brighton, CO —Today, the 17th Judicial District Attorney’s Office, the United States Department of Justice, the Federal Bureau of Investigation Denver Field Office, and the Adams County Sheriff's Offi
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Joint Statement by the 17th Judicial District Attorney’s Office and the Northglenn Police Department re Filing Decision
Posted Jan 26, 2023
Brighton, CO — Joint Statement by the District Attorney’s Office and the Northglenn Police Department On January 21, 2023, at approximately 12:11 p.m., officers with the Northglenn Police Depart
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