Sergeant Dennis Oliver Simmonds

Sergeant Dennis Oliver Simmonds

Boston Police Department, Massachusetts

End of Watch Thursday, April 10, 2014

Add to My Heroes

Dennis Oliver Simmonds

Sergeant D.J. Simmonds suffered a fatal brain aneurysm while working out at the Boston Police Academy gym at approximately 1:30 pm.

Officer Simmonds had suffered a head injury on April 19, 2013, when he was struck by shrapnel from an explosive device that was detonated during a shootout with the Boston Marathon Bombers in Watertown, Massachusetts, the day after they murdered Police Officer Sean Collier of the Massachusetts Institute of Technology Police Department.

After he collapsed in the gym, he was rushed to a local hospital, where he passed away.

Sergeant Simmonds had served with the Boston Police Department for six years. He is survived by his parents.

He was posthumously promoted from officer to sergeant by the Boston Police Department on June 14, 2018.

Bio

  • Age 28
  • Tour 6 years
  • Badge Not available

Incident Details

  • Cause Duty related illness
  • Incident Date Friday, April 19, 2013
  • Weapon Explosives; Bomb
  • Offender Killed; Sentenced to death

PT, terrorism

Powered by Esri
Zoom In
Zoom Out
Expand

Most Recent Reflection

View all 35 Reflections

Never Forgotten by the officers both active and retired of the Boston Police Department

Retired Boston P.O. Robert E. Anthony Historian

April 10, 2025

Create an account for more options, or use this form to leave a Reflection now.