Against the rules

Dear GM: I just found a player in the game who against the rules.This player login two accounts in game at the same time . One is in the raid of Onyxia ,and another character is in raid of Molten Core. I thought his behavior violates the rules of the game.Please consider the appropriate situation.His ID vipmvp and chinamyhome.Thanks my dear GM. Data: 2023.10.25.

Thanks we will take a look.