Rules
2.2 In-game warnings to players.
When issuing a warning to a player in-game, make sure that it is through the chat medium so that everyone can see it. Make sure that you give the player ample warning (Minimum of 2) after that you may then declare a KOS on because of their actions. An example of this would be if a player is following you through the map, then you can KOS them after warnings have been given. After the second-warning it will not be classed as RDM.
2.2b Detective Warnings/KOS Reasons.
As a detective, you may issue a warning to players to not do/use something, but you must still use valid KOS reasons, and not make up your own false reasons. Some examples of valid detective KOS reasons are;
- Refusing to go into the traitor tester after being asked multiple times.
- Using a health station repeatedly without permission.
- Refusing to cease fire.
You must warn him via chat at least twice before issuing a KOS, verbal warnings do NOT count, no matter if the other player can confirm they're hearing you. As far as things go, you shooting him is more than enough cause for him to kill you, no matter if you're a detective or not. Granted, he shouldn't be shooting at you especially if you're a detective and he's an innocent, but it's completely within his right to defend himself.