Your situation escalated into a full shootout with police, and once lethal force is involved, everyone tied to that scenario takes on that risk. Even if you didn’t ask for help, the person who intervened was apart of your faction and did so on your behalf, which directly links you to the escalation, you don’t get to separate yourself from the outcome when it goes bad. Being detained doesn’t make you immune in an active gunfight, and collateral damage is a realistic result of that kind of RP. Lag or a misfire doesn’t change that this was a legitimate scenario with real consequences.
On top of that, this isn’t the first time you’ve pushed the edge of server rules, in fact this may be the 3rd time this char has been pk'd.... and the officer involved was fine with the PK, so there’s no real reason to overturn it.