There are 2 parts to this, you searching the guy while they are mugging him and being affiliated with them means you are a part of the mugging. But they didn't keep sight of you after the mugging and due to 20 mins passing they then lose the ability to recognise you meaning the PK is invalid, if they found you in that 20 mins and followed you for that hour and a bit until they killed you then it would be valid but they didn't.
Your appeal has been reviewed and accepted.
Your character has been reinstated and can be used again.
Your appeal has been reviewed and accepted.
Your character has been reinstated and can be used again.