Detectives


Criminal Investigation Division

The Criminal Investigations Division is comprised of criminal investigators who are involved in general investigations ranging from criminal damage to homicide, they also have sub-specialties with specialized training in the following areas: investigate homicide, attempted homicide, aggravated assaults, deaths with suspicious circumstances, and armed robberies. Detectives utilize all available resources and investigative techniques to solve crimes, track down and apprehend suspects, accomplices and fugitives.

SEX CRIMES / CHILD CRIMES / DOMESTIC VIOLENCE

These investigators are assigned to the department’s Domestic Violence Response Unit. They investigate any crime of domestic violence that have aggravating circumstances and work in conjunction with the prosecutor’s office to bring the case to a successful conclusion. These Investigators are also assigned to several Domestic Violence Task Forces that combat domestic violence.

The San Luis Police Department Sex Crimes Detectives investigate indecent exposure, public sexual indecency, sexual abuse, and sexual conduct with a minor, sexual assault of adults & children, sexual assault with a spouse, molestation of a child, possession of child pornographic material and sexual exploitation of minors under the age of 18.

Both of these websites are update constantly and offer the best information to people who want to conduct research on sexual offender and or crimes against children.

Lieutenant

Miguel Alvarez

Miguel Alvarez
email

Lieutenant Miguel Alvarez is a lifelong resident of the City of San Luis, where he has served the community as a Police Explorer and Police Volunteer prior to becoming a Police Officer for the City of San Luis Police Department in 2006. Lieutenant Alvarez has served as a Yuma County Deputy Sheriff and prior to that as a Correctional Officer for the State of Arizona. Lieutenant Alvarez is assigned as the department Patrol Division Commander overseeing the department’s patrol operations.

Lieutenant Alvarez’s education includes a Master’s Degree in Administration of Justice and Security with a Concentration in Law Enforcement Organizations and a Bachelor of Science in Human Services from University of Phoenix. He is a graduate of the Arizona Peace Officer Standards and Training Board (AZPOST) Leadership Program (ALP) Session 19, the Northwestern University Center for Public Safety School of Police Staff and Command (SPSC) Session 441. Lieutenant Alvarez has completed the FBI Law Enforcement Executive Development Association’s leadership schools, and has achieved the FBI-LEEDA Trilogy Award. Lieutenant Alvarez is additionally a certified performance auditor per LD Consulting.

Lieutenant Alvarez serves on several local committees involving crimes against children, child trafficking, domestic violence, and administration of justice education for high school and college students. He is Adjunct Faculty of the Administration of Justice program, and is an instructor for the Law Enforcement Training Academy at Arizona Western College.

Lieutenant

Marco SantanaMarco Santana
email

Lieutenant Marco Santana was born in San Luis, Mexico and has been a resident of Yuma County since 1991. He has lived in the City of San Luis, Arizona since 2004, where he has served the community as a Police Officer for the City of San Luis Police Department since 2003.

Lieutenant Santana has served the City of San Luis Police Department in the following capacities: Patrol Officer, School Resource Officer, Field Training Officer, Motor Officer, Training Instructor and SWAT Officer. Lieutenant Santana is currently assigned as the Administrative Lieutenant overseeing the Communications Division, Records Division, Quality Assurance and Professional Standards/Internal Affairs Division. He has served the agency as a Support Services Lieutenant overseeing the Criminal Investigation Division, the department’s evidence room, the School Resource Officer’s Unit and the department’s community outreach program. He is the current department’s Public Information Officer, which he has served since 2013.

Lieutenant Santana’s education includes a Bachelor’s Degree in Criminal Justice from Northern Arizona University and an Associate of Arts in Administration of Justice Studies from Arizona Western College. He graduated from the Arizona Western College Law Enforcement Training Academy in 2003. He is also a graduate of the Arizona Peace Officer Standards and Training Board (AZPOST) Leadership Program (ALP) Session 23, and the Northwestern University Center for Public Safety School of Police Staff and Command (SPSC) Session 441. Lieutenant Santana has completed the FBI Law Enforcement Executive Development Association’s leadership schools, and is a recipient of the FBI-LEEDA Trilogy Award.

Lieutenant Santana serves on several local committees that include the Yuma County Domestic Violence/Sexual Assault Task Force with Amberly’s Place, and the Yuma County Drugs & Delinquency Coalition. He serves an Adjunct Faculty Instructor at the Arizona Western College Law Enforcement Training Academy since 2013 and currently teaches traffic law, defensive driving and high risk vehicle stops.

Detective

Ernesto Prieto

Ernesto Prieto
email