Command Staff

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Chief Carroll_boxChief Mike Carroll

Chief Mike Carroll was appointed to the position of Police Chief on July 1, 2017. Chief Carroll was hired as a Police Officer for the City of Newark in April 1991. He worked as a patrol officer for four years before being selected as a School Resource Officer and Explorer Advisor in 1995. After returning to Patrol in 1999, he served in a variety of assignments including Field Training Officer, Hostage Negotiator, and Trauma Support Team Member. He was then assigned to the Southern Alameda County Gang Suppression Task Force as a Detective from 2002-2006. Chief Carroll was promoted to Sergeant in 2008 and was responsible for supervising a shift in the Patrol Division, as well as the Field Training and Canine Programs. He was then assigned to oversee the Detective Division from 2010-2012. He was promoted to the rank of Commander in April 2012, serving as the Support Services Division Commander. The Support Services Division includes Investigations, Communications (Dispatch), and the Records Division. He was responsible for Internal Affairs, Technology, Professional Standards, Public Information Officer, Social Media, Community Engagement, the Red Light Camera System, as well as Personnel, Training, and Hiring for the police department. In 2016, he assumed the additionally responsibilities of patrol operations, SWAT, and K-9.

Chief Carroll has a Bachelor of Science degree from California State University Hayward. He also graduated from the Police Executive Research Forum’s (PERF) Senior Management Institute of Policing Program at Boston University and the Peace Officers Standards and Training (POST) Command College.

Chief Carroll and his wife Lisa are the proud parents of three children; James, Melissa, and Matthew. In his free time, he coaches a local high school soccer team and is a member of the Newark Rotary Club.

Chief Carroll can be contacted at or (510) 578-4220.

Capt_ Arguello_boxCaptain Jonathan Arguello

Captain Jonathan Arguello joined the Newark Police Department in February 1995 as a Police Cadet. In 1996, he was hired as a Police Officer and assigned to the Patrol Division where he later trained newly hired police officers as a Field Training Officer. In 2005, he was assigned to the regional Southern Alameda County Narcotics Enforcement Team (SACNET) where he served as a Narcotics Detective. Capt. Arguello has been a member of the department’s Hostage Negotiation Team, an Active Shooter Instructor and spent nine years as a member and Team Leader on the department’s S.W.A.T. team.

Capt. Arguello was promoted to the rank of Sergeant in 2007 and served as the Traffic Division supervisor from 2007 through 2012 before being selected to oversee the department’s Special Enforcement Team where he remained through 2013. Capt. Arguello was promoted to Lieutenant in 2014, serving as an Operations Lieutenant overseeing Patrol, Detective Division, Major Crimes Task Force, Special Enforcement Team, as well as the Explorer and Honor Guard programs. Capt. Arguello was promoted to Captain in 2017 and currently manages the Field Operations Division overseeing Patrol, Detectives, Traffic, School Resource Officer Program, Major Crimes Task Force, Traffic, K-9, S.W.A.T., Crisis Negotiation Team, Communications, Records, Animal Control, Reserve Officers, Explorers and the Field Training Program.

Capt. Arguello earned Associates of Arts degrees both in Administration of Justice and Liberal Arts from Ohlone College in 1995. He is a long time member of numerous professional organizations, including the California Association of Tactical Officers, the California Narcotic Officers’ Association and the California Peace Officers’ Association. He has received numerous awards including the department’s Silver Award on five occasions, has been recognized as Employee of the Quarter on three occasions, as well other commendations from the department and outside organizations. His continued dedication to the betterment of the law enforcement profession led his peers to elect him as President of the Newark Police Association, where he served as a board member from 2003 through 2007. Capt. Arguello is a 2012 graduate of the California Commission on Peace Officer Standards and Training (POST) Sherman Block Supervisory Leadership Institute, completed the California POST Management program through Humboldt State and in 2013 earned his Bachelor of Science degree in Criminal Justice Management.

When away from the police department, Capt. Arguello enjoys uncovering new foodie spots, as well as running to burn off all of those extra calories, but most of all he loves spending time with his wife and two children.

Captain Jonathan Arguello can be contacted at or (510) 578-4375.

Capt_ Loth_boxCaptain Chomnan Loth

Captain Chomnan Loth was hired as a Police Officer for the City of Newark in 2002. During his time as an officer, Captain Loth worked in Patrol and as a Detective with the Gang Violence Suppression Task Force and the Major Crimes Task Force. During his time in the task force, Captain Loth specialized in gang enforcement and investigations. Captain Loth is a court recognized expert in the area of gangs and has testified numerous times as an expert in Alameda and San Mateo County Superior Courts. Captain Loth also worked as a Field Training Officer, Defensive Tactics Instructor, Chemical Agent Instructor, Acitve-Shooter Instructor, and as a member of the SWAT and Sniper teams.

Captain Loth was promoted to Police Sergeant in 2011, where he worked as a Patrol Sergeant, Support Services Sergeant, and Special Enforcement Team Sergeant.

Captain Loth was promoted to Lieutenant in 2014, where he served as the Operations Lieutenant overseeing Patrol, the K9 Program, Special Enforcement Team, Major Crimes Task Force, and SWAT.

Captain Loth has a diploma with honors and received a scholarship from Milpitas High School. He has an Associate of Arts in Liberal Arts and an Associate of Science in Criminal Justice degrees from Ohlone College, a Bachelor of Science degree in Occupational Studies and Masters of Science degree in Emergency Services Adminisration (Summa Cum Laude) from California State University Long Beach. In 2014, Captain Loth earned his Doctor of Business Administration (Magna Cum Laude) degree from California Southern University. Captain Loth is a member of The Honor Society of Phi Kappa Phi, which is the nation’s largest, oldest, and most selective collegiate honor society founded in 1889, where memberships are by invitation only from the President of the university's chapter.

Captain Chomnan Loth can be contacted at or (510) 578-4946.

Lt_ Macias_boxLieutenant Jolie Macias

Lieutenant Jolie Macias was promoted to the rank of Lieutenant and will oversee Patrol Teams, SWAT, Crisis Negotiations, K-9, Honor Guard, Detectives, School Resource Officer, Major Crimes Task Force, Property and Evidence, Fingerprint Examiner, Regional Computer Forensic Laboratory, Criminal Evidence Response Team, Patrol Scheduling, and Mall Liaison.

Jolie grew up in Fremont, but has deep roots to the City of Newark through many relatives that have worked at iconic Newark businesses such as Peterbilt and Wedgewood Stoves. Her late grandmother, Betty Gentry, was a City of Newark employee for nearly 45 years and has the dance room at our Silliman Activity Center named in her honor.

Jolie began her law enforcement career with Newark in 2004 when she was hired as a Police Officer. She came to us as a San Francisco State graduate. Early on, she worked as an Explorer Advisor, Field Training Officer, and a member of the SWAT Team. Jolie completed a three year rotation as a detective for the Southern Alameda County Major Crimes Task Force prior to promoting to Sergeant in 2014. A majority of her time on as sergeant has been spent supervising patrol, but she also serves as the Reserve Program Coordinator and SWAT Team Leader.

Jolie is a lifelong competitive athlete and has leveraged her influence in the fitness industry to coordinate successful local charitable events that benefit children’s hospitals and families of fallen police officers. And because of her Crossfit Games accomplishments and by being a female pioneer in the tactical community, she is a current brand ambassador for 5.11 Tactical.

Lieutenant Jolie Macias can be contacted at or (510) 578-4921.

Lt_ Kimbrough_boxLieutenant Vince Kimbrough

Lieutenant Vince Kimbrough was promoted to the rank of Lieutenant on June 1, 2017 and oversees Patrol Teams, Traffic, Field Training Officer Program, Reserves, Explorers, Animal Control, Dispatch, Records, and Special Events.

Vince was born and raised in Irving, Texas and graduated from Douglas D. MacArthur High School in 1988. He served in the United States Marine Corp from 1990-1992. Vince attended the Modesto Jr. College Police Academy and graduated in December 1995.

He was hired as a Deputy Sheriff with the Alameda County Sheriff’s Department where he worked from June 1996 – December 1996. He then moved on to the Modesto Police Department where he worked as a Police Officer from January –October 1997. Vince went to the Stanislaus County Sheriff’s Department in July 1998 and worked there until being hired by our department. Vince was hired as a Newark Police Officer on June 7, 2011 and was promoted to the rank of Sergeant on November 1, 2012. He has been assigned to the patrol division for the duration of his time here.

During Vince’s 22 years in law enforcement he has worked in a variety of assignments including Recruit Training Officer and Field Training Officer. He is also a POST certified instructor in firearms and emergency vehicle operation course (EVOC). Vince attended college courses at Bethany College in Lindsburg, Kansas and Modesto Jr. College and is currently enrolled at Union Institute & University pursuing his bachelor’s degree in Criminal Justice Management.

Lieutenant Vince Kimbrough can be contacted at or (510) 578-4981.