today me and my friend (MonkeysmonsteR) were on our skyblock we advertised our mob grinder when a player (Arboklv12) comes and managed to get through our wall. He has no kits but got to the other side. He killed 10 of our chickens (all of them) and one of our cows (we only had one). We have a suspicion of /through. We did not manage to get screen shots as we not realise until he left, but when I search his name I find that he hacks on many other servers (mineplex ect). He did not glitch through the wall as they spawn in the centre of the room, even if he did glitch, that gave im no right to kill our animals. He also flew all over our island. On other server forums there is appeals for him about : flying spamming racism etc.
