Maryland Department of Public Safety and Correctional Services - Division of Correction, Maryland
End of Watch Tuesday, July 25, 2006
Add to My HeroesDavid Warren McGuinn
Officer David McGuinn was stabbed to death in the maximum-security Maryland House of Correction in Jessup, Maryland, while conducting a nightly prisoner count at 10:00 pm.
Two inmates had jimmied their cell doors and then attacked Officer McGuinn on the fourth tier as he walked past their cells. He was stabbed repeatedly in the neck, head, thighs, and back in areas not protected by his stab-vest. He was able to break free and retreated down two flights of stairs before he collapsed. Other officers immediately came to his assistance. He was transported to a local hospital where he succumbed to his wounds one hour later.
One of the inmates was found incompetent to stand trial. On February 9th, 2012, the other inmate was convicted of first-degree murder. He was subsequently sentenced to life in prison without the possibility of parole.
Officer McGuinn had served with the Maryland State Division of Correction for two years. He is survived by his children and fiancee.
Bio
- Age 42
- Tour 2 years
- Badge Not available
Incident Details
- Cause Stabbed
- Weapon Edged weapon
- Offender Sentenced to life
Most Recent Reflection
View all 296 ReflectionsThere is not a day that I don’t think about you. I love and miss you so much. My life changed the day you left and I never got to say to say goodbye. Your were a father figure to me and I will never forget you. I love you and may you Rest In Peace until we see each other again.
Marcus
June 3, 2021
Recent LODD Deaths
Detective Timothy Jones
Park Forest Police Department, IL
EOW: December 3, 2025
Specialist Sarah Beckstrom
United States Department of Defense - Army National Guard - West Virginia Army National Guard, WV
EOW: November 27, 2025
Reserve Deputy Sheriff John C. Stahl, III
Jefferson County Sheriff's Office, IN
EOW: June 8, 2025
Sergeant Terri Jean Sweeting-Mashkow
Indian River County Sheriff's Office, FL
EOW: November 21, 2025
Police Officer Alec Sanders
Alhambra Police Department, CA
EOW: November 20, 2025
Corrections Officer Jeremy Lewis Hall
Virginia Department of Corrections, VA
EOW: November 17, 2025
Police Officer Marc Brock
Vivian Police Department, LA
EOW: November 14, 2025
Corporal Blake Adair Reynolds
Delaware County Sheriff's Office, IN
EOW: November 12, 2025
Police Officer Roger Smith
WakeMed Campus Police & Public Safety Department, NC
EOW: November 8, 2025

