Roll of Honor
Incident
Detective Mark Baker, Detective Isaiah Emenheiser, and Detective Sergeant Cody Becker were shot and killed, and another detective from the Northern York County Regional Police Department and a deputy sheriff from the York County Sheriff's Office were wounded while attempting to serve an arrest warrant at the 1800 block of Haar Road in North Codorus Township.
A man was wanted for stalking a female; hiding in the field near her house, wearing camouflage, carrying an AR-15, and using binoculars to watch her in her home. When detectives were unable to serve the warrant at the suspect's home, they went back to the home of the person he was stalking. At 2:08 p.m., detectives approached the house and realized the front door was unlocked. When they entered the home, they were met with gunfire. Detective Sergeant Becker and Detective Emenheiser were ambushed. When Detective Baker and another detective tried to find cover, they were fired upon multiple times.
The shooter then walked out of the house to fire at another detective and a York County Sheriff's Office deputy, striking the detective and the deputy's vehicle. The detective and deputy returned fire, but the suspect continued to advance to the roadway until he was shot and killed.
Detective Sergeant Becker, Detective Baker, and Detective Emenheiser died on scene. Another detective and the deputy were critically wounded.
Detective Baker was a United States Army veteran and had served with the Northern York County Regional Police Department for over 21 years. He had previously served with the Philadelphia Police Department.
Survivors
He is survived by his wife, four children, his mother, and two grandchildren.
In Our Keeping
- Permanent identifier
BO-US-PA-37F98A7C- Stewardship
- Maintained by NeuraWeb Global Inc.
- Added to badge.nw
- August 2, 2026
- Last updated
- August 2, 2026
Honored here by 1 tribute.
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Also honored at salute.nw — U.S. Army. One record, 2 gates. Mark is one person.
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Tributes
I served 1985 to 1993. You served too, before the badge - different uniform, same idea. You go where you are sent and you do not get to pick the call.
Detective Baker gave the Northern York County Regional Police Department 24 years.
Thank you for your service to the York community. Thank you for your service before it. Gone but never to be forgotten.
Rest easy, brother.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Military Service
Mark Edward Baker served in the U.S. Army before joining law enforcement.
Detective Mark Edward Baker is one of 1 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 0% of all 97,759 officers honored here.
In PA, 597 of 1,261 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 47.3% of this state's fallen. That is 47.3 percentage points above the national rate of 0%.
At Northern York County Regional Police Department, 3 of 4 officers on record were killed feloniously — deliberately targeted and murdered in the line of duty — 75% of this agency's fallen.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. Mark Edward Baker's cause is highlighted.
How Mark Edward Baker Compares
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. Mark Edward Baker is highlighted in Sep.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. Mark Edward Baker was killed by rifle; ar-15.
Incident Location
Military Service
Mark Edward Baker served in the U.S. Army before joining law enforcement.
Visit Mark Edward Baker’s page on salute.nw →
His full service record — units, decorations, where he served — is kept on salute.nw.
Others Who Wore This Badge
3 officers from Northern York County Regional Police Department are honored on badge.nw.
