Detective Mark DuBois retires after 35 years, closes murder case | The Locally Times
Boulder City Police Detective Mark DuBois retires after 35 years, concluding a murder case involving a 2021 Las Vegas assault that resulted in an elderly woman's death.
Boulder City Police Department Detective Mark DuBois retires this week after 35 years of law enforcement service, concluding a murder case. The department's news flash, posted February 18, 2026, announced DuBois's retirement and the closure of the multi-year investigation. DuBois began his career with the Boulder City Police Department in August 1990 as a Reserve Police Officer. He served in various assignments, including Patrol, Traffic, Crime Scene, Investigations, Fleet, and as a Firearms Instructor. For the last 15 years of his service, DuBois worked as a Detective and Crime Scene Analyst. The news flash indicates DuBois found Boulder City policing community-oriented and appreciated the opportunities and professional relationships developed during his time with the department. The recently closed murder case involved an elderly woman assaulted in Las Vegas in October 2021. Two suspects followed her home, and one grabbed her purse, dragging her with a car. The woman suffered severe injuries and died in December 2021, with her death ruled a murder caused by head trauma. It also does not detail the inter-agency cooperation between Boulder City and Las Vegas law enforcement for a crime that occurred outside Boulder City. The department has not yet announced plans for filling the vacancy left by a detective with 35 years of experience, including 15 years in investigations and crime scene analysis.