Ban the known ranges. We'll see who comes to us to request unbans. If innocents get caught we re-define the ranges or cancel them and apologize to those we blocked for a short while. There is even a chance one of the morocco players knows him and can talk some sense into him.
Trust is hard to gain but easy to lose.
The following user(s) said Thank You: snowman, Rs_Funzo, josua, Maquisard