Detective John James Mulligan

Detective John James Mulligan

Boston Police Department, Massachusetts

End of Watch Sunday, September 26, 1993

John James Mulligan

Detective John Mulligan was shot and killed while working a private detail. He was shot five times in the face, execution style, as he sat in his car.

Two suspects were tried and convicted of first-degree murder in 1995, but one suspect had his conviction overturned in 2000 when he plea bargained for manslaughter. In February 2006, the suspect admitted his participation in the execution-style killing of Detective Mulligan. He is eligible for parole in summer 2006.

Detective Mulligan had served with the agency for 27 years.


  • Age 52
  • Tour 27 years
  • Badge Not available

Incident Details

  • Cause Gunfire
  • Weapon Handgun; .25 caliber
  • Offender 2 suspects convicted

Most Recent Reflection

View all 24 Reflections

I recall the times when John Mulligan Intimidated me, Robbed me twice, and then he brought false charges against me for armed robbery twice. I was almost put in prison for 25 years to life, because I reported him to his superiors. He was a true corrupt cop that robbed prostitutes in china town, extorted money from drug dealers and he put plenty of innocent black men in prison during his rein.
How was he able to get away with such corrupt behaviour?
I guess he got a some street justice for all the crimes he committed against innocent people.

Citizen Raymond Jarvis

March 27, 2018

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