The Sierra Vista Police Department attempted to negotiate with a barricaded subject for more than three hours on Tuesday afternoon following a domestic violence call and ultimately found that the subject, a local man, had died from a self-inflicted gunshot wound.
SVPD officers responded to a residence in the 3300 block of Greenbrier Road in reference to a domestic violence incident at about 12:50 p.m. on Tuesday. Upon arrival, officers made contact with a male resident who was wheelchair bound and attempting to vacate the residence. While assisting the man, officers learned the man had an argument with his 33-year-old son, Christopher Nicolson. Nicolson had threatened his father with a handgun inside the residence and fired a single round, which did not strike either man.
Once Nicolson’s father was safely removed from the residence, officers set up a perimeter around the house while the SVPD Tactical Unit responded to the scene to assist with an armed barricaded subject. Officers also evacuated nearby residences and closed nearby streets.
The SVPD Tactical Unit attempted to negotiate with the subject, later confirmed to be Nicolson, for more than three hours. The Tactical Unit deployed a robot and enlisted the assistance of the Cochise County Sheriff’s Office SWAT Team and an additional robot to enter the residence safely. When the SVPD Tactical Unit entered the residence, officers discovered Nicolson had died from a self-inflicted gunshot wound. It’s unclear exactly when the fatal gunshot was fired. SVPD detectives remained on scene to continue the investigation Tuesday evening.
This investigation is ongoing and anyone with information relevant to the case is urged to contact SVPD Detective Thomas Ransford at (520) 452-7500.