Baltimore Detective was murdered with his own gun a day before he was set to testify before a grand jury in an ongoing federal investigation of police corruption and drug shakedowns by an elite gun recovery unit.

https://www.washingtonpost.com/local/public-safety/baltimore-police-detective-fatally-shot-in-head-with-own-gun-died-clutching-radio/2017/11/22/d4180b20-cfd4-11e7-9d3a-bcbe2af58c3a_story.html?