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The City of Portland, Oregon

Police Bureau

Sworn to protect. Dedicated to serve.

Phone: 503-823-0000

Non-Emergency: 503-823-3333

1111 S.W. 2nd Avenue, Portland, OR 97204

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Assistant Chiefs Bios

Mike Leasure: Services Branch

On September 2, 2021, Mike Leasure began serving as the Services Branch Assistant Chief. Prior to that, he had been serving as the Operations Branch Assistant Chief since July 15, 2020. served as Commander of Central Precinct since July 1, 2020.

Mike was appointed to the Portland Police Bureau in 2000. After serving as a patrol officer and a Parkrose School Resource Officer, he was promoted to sergeant in 2010 and assigned to oversee patrol, as well as the Bike Patrol at Central Precinct. As a sergeant in the Personnel Division, he oversaw development and successful implementation of the diverse officer recruitment and hiring plan, which resulted in a 30% increase in the number of diverse candidates hired by the Police Bureau.

In 2016, Mike was promoted to lieutenant and assigned to Central Precinct, to the Chief’s Office as Adjutant Lieutenant, North Precinct and the Tactical Operations Division.

Mike was promoted to Captain in 2019 and assigned to the Youth Services Division, which was responsible for providing police services to approximately 189 schools and approximately 77,000 students. He then was promoted to Commander and assigned to Central Precinct.

Mike is known as a committed, collaborative and progressive law enforcement executive with extensive experience in critical decision making, working in complex and dynamic environments, and a demonstrated commitment to diversity and community engagement. He holds a Bachelor of Arts Degree in Sociology and Criminal Justice from Gonzaga University and attended the Organizational Management and Leadership Academy at the Department of Public Safety Standards and Training (DPSST).

Mike is actively involved in the community and currently serves on the Jefferson High School Boys to Men Mentoring program.  He has participated in the African-American Advisory Council, the Diversity Inclusion Leadership Council, and as a basketball camp coordinator for the Portland Police Summer Camp.  He has been honored with the Achievement Medal from the Community/Police Relations Committee and the George Weatheroy Police Volunteer of the Year award.


Jami Resch: Investigations Branch

Jami was appointed to the Portland Police Bureau on February 15, 1999. After serving as a Patrol Officer, Neighborhood Response Team Officer and Tactical Operations Division Crime Analyst Officer, she was promoted to Sergeant in 2008, and was assigned to East Precinct and later the Gun Task Force. She was promoted to Lieutenant in 2012 and assigned to East Precinct and later the Criminal Intelligence Unit. She has also served as the manager of the Portland Police Honor Guard and as a Critical Incident Commander. In October 2016, she was promoted to Captain and assigned to North Precinct; she later served as Acting Commander. In May 2018, she was appointed Assistant Chief of the Investigations Branch. She was later appointed to Deputy Chief in 2019.  On Tuesday, December 31, 2019, Jami was sworn in as Chief of Police. She served until June 2020, when she stepped aside, naming Chuck Lovell as her successor. 

“After 10 days of nightly demonstrations, I made the decision after listening to our community,” said Chief Jami Resch at the time “It was time for PPB to stand up and be the leader in change.  I first called Mayor Wheeler and I asked him to support me and support the Portland Police Bureau and being the beginning of the change that this city needs. I believe this change starts with trust that absolutely must come from the heart. 

“I asked Chuck Lovell to step into the role as Chief of Police for the Portland Police Bureau. He is the exact right person at the exact right moment. Chuck is the most compassion, honest, humble, genuine-to-the core person. His entire career has been about service. It is important the city, the Bureau and all of us stand alongside Chief Lovell. I am 100% confident in him and his leadership.”

After stepping down, Jami served as Acting Assistant Chief of Investigations for a short time before being appointed to assume that role on August 4, 2020. 

Jami has been an active member in the Police Bureau's Muslim Council, Slavic Advisory Council and Refugee Integration Program. She has also volunteered her time with Camp Rosenbaum, Shop with a Cop and acted as a mentor for the Zman Scholarship Foundation.

Jami holds multiple certificates in advanced SWAT command and decision making; threat assessment training and diplomatic security law enforcement training. She was honored with a Bureau Achievement Medal and four Unit Commendations.

She earned a Bachelor's Degree in Allied Health Sciences with a Minor in Psychology from the University of Portland. 


Brian Ossenkop: Services Branch

Brian was sworn in on September 2, 2021 as Assistant Chief of Operations. Prior to that, he had been serving as Commander of North Precinct since 2019.

Brian was appointed to the Portland Police Bureau on October 6, 1994.  After finishing his training, he was assigned to Northeast Precinct and then the Gang Enforcement Team (GET).  In 2003, he was promoted to sergeant and worked at Northeast, Central, and MPU.

Brian was promoted to lieutenant in 2011 and worked at North Precinct, the Detective Division, and the Tactical Operations Division.  In 2018 he was promoted to Captain and assigned to the Strategic Services Division.

Brian also serves as a  Critical Incident Commander (CIC) since 2018 and currently manages the training of new CICs. The role of the Critical Incident Commander, as well as the commanding officers and supervisors of the Special Emergency Reaction Team (SERT) and Crisis Negotiation Team (CNT), is to ensure that high-risk tactical incidents are resolved through coordination of intelligence, negotiation efforts and continual updated situational awareness. The goal is always to preserve life and taking custody of high-risk criminal offenders with the least reliance on force that is practical under the circumstances of the incident.

Brian earned a Bachelor of Science degree in Administration of Justice from Portland State University. He also holds multiple certifications in advanced SWAT command and decision-making.

Brian has multiple letters of commendation in his personnel file and was honored with an Achievement Medal in 2017 as part of his work on the Critical Incident Command Group. He also was honored with a Unit Commendation in 2002 for his work on GET.