A house fire near San Joaquin Road and Bopp Road on Tucson's southwest side turned into a violent confrontation Sunday night when two residents allegedly attacked a fire captain and sheriff's deputies working the scene. Sean Michael Gueffroy, 35, and Sarah Marie Peterson, 36, now face felony assault charges, while a minor was cited for obstruction.
According to KVOA, San Xavier District deputies responded to the house fire near San Joaquin Road and Milkyway Drive at approximately 7:30 p.m. Sunday. Residents at the home appeared to be upset with crews from the Drexel Heights Fire District, the outlet reported, and deputies told the suspects to step away from the firefighting operations.
Per the Pima County Sheriff's Department, the suspects refused to step away from the active firefighting operations. That refusal escalated quickly: Gueffroy allegedly assaulted a fire captain and then allegedly assaulted two deputies, and he is accused of resisting detention once officers attempted to take him into custody, the sheriff's department said, according to the same report.
Charges Filed Against Both Adults
Gueffroy faces charges of aggravated assault on a fire captain and a sheriff's deputy, while Peterson faces a charge of aggravated assault on a first responder, the outlet's report notes. Both were released to pretrial services following their arrests. A minor present at the scene was separately cited for obstruction, though the circumstances surrounding that citation have not been detailed.
Under Arizona Revised Statutes § 13-1204, simple assault against a peace officer, firefighter, or emergency medical responder performing official duties is elevated to felony aggravated assault, according to the Arizona Law Group. That statute is why an altercation at a fire scene can carry consequences far beyond a standard misdemeanor charge. Aggravated assault on a first responder is typically charged as a Class 4 or Class 5 felony in Arizona, with penalties ranging from probation to several years in state prison for a first-time conviction, per the Salwin Law Group.
A Familiar Corridor for Southwest Pima County Responders
The Drexel Heights Fire District covers a 60-square-mile stretch of unincorporated southwestern Pima County, including the San Joaquin, Camino Verde Estates, and Valencia West communities, according to 5280Fire. The district runs five stations and employs more than 100 personnel to handle fire and medical calls across southwest Tucson and the Tucson Mountains, per the Drexel Heights Fire District. Dispatch for those crews runs through the Valley Emergency Communications Center, a regional hub co-located with Pima County Sheriff's Department operations, which allows fire and law enforcement to coordinate closely on calls like this one.
Deputies who answered Sunday's call operate out of the San Xavier District, whose $9 million substation on West Valencia Road opened in June 2025 to serve as the law enforcement hub for Tucson's southwest side, as reported by the Arizona Daily Star. The same substation's deputies previously handled a major emergency response in the nearby Drexel Heights area last September, following reported abduction attempts near West Los Reales Road, as Hoodline previously reported on nearby kidnapping fears.
How Common Is Violence Against Firefighters?
National data suggests physical attacks on firefighters remain uncommon but not unheard of. Assault by a person or object accounts for between 1% and 6% of nonfatal firefighter injuries on firegrounds nationwide each year, according to National Fire Protection Association figures published in December 2025. A separate NFPA report from May 2026 found that four firefighters nationwide died from physical assault while on duty during 2025, underscoring that while rare, hostility toward responders can turn deadly.
Several key details remain unresolved. What sparked the house fire near San Joaquin and Bopp roads has not been reported, nor has the specific reason residents were upset with the Drexel Heights crews. The exact sequence of physical force between Gueffroy, Peterson, and responders before deputies made arrests also has not been detailed, and the status of the cited minor remains unclear.
