Detective Mark Baker, age 53

Lost to gun violence on September 17, 2025 in Spring Grove, Pennsylvania.

Detective Baker had served with the Northern York County Regional Police Department for over 21 years and had previously served with the Philadelphia Police Department for a total of 24 years & 9 months. Thank you for your service & RIP.

Photo sources:

• Detective Mark Baker

News sources:

• Sep 22: York Dispatch: Funeral services planned for police officers killed in North Codorus shooting
• Sep 18: New York Post: Pennsylvania cop killer Matthew Ruth fired at officers when they entered his stalking victim’s house — which was empty save for a dead dog
• fox43.com: York County, Pa. in grief | What we know about the 5 officers shot on Wednesday
• WHP: 3 officers shot dead, 2 critically wounded while serving warrant in York County: officials
• https://dailyvoice.com/va/ashburn/multiple-officers-shot-in-police-governor-shapiro-en-route-developing/
• pennlive: What we know so far about the police shooting in York County
• Gun Violence Archive

Also killed were:

• Detective Isaiah D. Emenheiser, age 43
• Detective Sgt. Cody Becker, age 39

Other nearby fatal shootings:

• Spring Grove, PA - September 12, 2021
• Spring Grove, PA - October 20, 1997