Police Department > NPD Adminstration

NPD Adminstration

Nogales Police Department Chief of Police

Derek K. Arnson

Chief Arnson was appointed Chief of Police for the City of Nogales in 2012.  He is a native of Arizona and holds a Bachelors Degree in Criminal Justice, a Masters Degree in Education from Northern Arizona University, and a Masters Degree in Security Studies/Homeland Security from the United States Naval Post Graduate School in Monterey, CA. Chief Arnson is a graduate of the FBI National Academy Session #259, a graduate of Northwestern University - School of Police Staff and Command Class 361 and a graduate of Arizona State University as a Certified Public Manager CPM.  He has enjoyed over 25 years of police service and has over 16 years of supervisory, command and executive leadership experience.  He is a native of Arizona and is fluent in the Spanish language. 

Chief Arnson is an adjunct professor at the Santa Cruz County Provisional Community College District here in the City of Nogales and teaches Criminal Justice courses.  He is an advocate for victims of crime, especially women and children and is a leader in bringing education and attention to domestic and sexual violence.  He has partnered with our neighbors in Mexico to bring about the first ever "Start by Believing" bi-national campaign to end sexual and domestic violence.  He is also a nationally appointed board member of the Civil and Human Rights Committee of the International Association of Chiefs of Police (IACP).

Chief Arnson strongly believes in giving back to the community in the form of service.  He has been actively involved in many service organizations such as; Boy Scouts of America, Rotary International, Special Olympics, and the Boys and Girls Club.  Additionally, Chief Arnson sits on appointed boards both in the State of Arizona and within the local community.  In 2014, he was appointed to fill a vacancy on the Nogales Unified School District Governing Board.

Chief Arnson was a member of both the Eastern Arizona College and Northern Arizona University Football Teams.  He has been a private pilot and owner of aircraft for over 27 years.  He married his college sweetheart and has two children.  Chief Arnson currently resides in the City of Nogales. 



Nogales Police Department  Assistant Police Chief

Roy Bermudez

Assistant Chief Bermudez became involved with the Nogales Police Department while still in high school. He was a Cadet Explorer from 1981 to 1984, where he assisted in a civilian volunteer capacity and where he became captivated with police work. Assistant Chief Bermudez joined the Nogales Police Department in July 1984 as a Police Dispatcher and then transferred to Parking Control Officer in 1986.

In January of 1987, Assistant Chief Bermudez was hired as a Police Officer and attended the Arizona Law Enforcement Training Academy (ALETA) and was assigned to the Patrol Division. In December of 1990, Assistant Chief Bermudez was promoted to the rank of Detective and was assigned to the Santa Cruz County Metro Task Force and was re-assigned to the General Investigations Division in July 1992.

Assistant Chief Bermudez was promoted to the rank of Sergeant and was assigned to the Patrol Division in July of 1993 and eventually re-assigned to the Santa Cruz County Metro Task Force as the Unit Supervisor in January of 1997. In June of 1997, Assistant Chief Bermudez was promoted to the rank of Lieutenant where he commanded the Support Division, Patrol Division, and Investigations Division, along with the Special Response Team during his tenture. In September of 2001, Assistant Chief Bermudez was promoted to the rank of Captain and in charge of the departments operations until his promotion to Assistant Chief of Police in July of 2007. Assistant Chief Bermudez recently completed his bachelor's degree in Public Safety with a specialization in Emergency Management from Capella University.



Nogales Police Department Commander Carlos Jimenez


Commander Jimenez is a native of Nogales where he attended local schools. After graduating from high school, Commander Jimenez proudly served in the United States Navy.


Commander Jimenez joined the Nogales Police Department in December of 1986 as a Police Aide with assignments in Communications and Parking Enforcement. In July of 1988 Commander Jimenez transferred to the Patrol Division and attended and graduated from the Police Academy (ALETA). In March of 1992 Commander Jimenez was promoted to the rank of Detective and was assigned to the Arizona Office of the Attorney General Financial Remedies Unit. In August of 1995 Commander Jimenez was promoted to the rank of Sergeant and was assigned to the Patrol Division. Commander Jimenez also established and supervised the departments first Uniformed Bike Patrol Unit. In July of 2000 Commander Jimenez was promoted to the rank of Lieutenant where he commanded the Patrol, Support, and Investigations Divisions as well as the Commander for the Special Response Team. He was promoted to the rank of Commander in August of 2015 where he currently oversees the operations of the department.  






The Nogales Police Department is comprised of 84 fulltime employees, 64 of those certified commissioned police officers. The police command structure includes the police chief, an assistant police chief, a captain of operations and three lieutenants. The department is divided into three divisions, being the uniformed patrol division, the plainclothes investigative division and the civilian support division.


The patrol division handles every day community calls for service and all preliminary police investigations. This includes our DARE/GREAT officers, School Resource officers, K-9 officers, Special Response Team, Traffic Motor officers and rotating shift officers. This division is considered the main backbone of the police department.


The criminal investigations division functions as a multi-task orientated division. These police investigators are responsible for the investigation of violent crimes, child crimes, assaults, fraud, narcotics, internet crimes and homicides, to include applicant backgrounds, just to name a few. The investigations division is balanced and enhanced through advanced training, strategies and new technology.


The support division concentrates on community service and out-reach. This division specializes in communications, records and archives, evidence and property, and street parking enforcement and education. This division also strives for modernization and new technological innovations. Through specialized training, dedication and enhanced software, our communications division is able to provide service to both the police and fire departments.


The Nogales Police Department’s vision is to provide a quality, professional public safety service to the community and to promote a feeling and perception of empathy, honesty, competence and commitment.