@StormKiller8 sent a message to chat saying "i stole some guys house XD" at approximately 13:10 (EST), after telling Stormkiller to go to the house, I teleported to him. At 13:12 I messaged the Staff chat in discord asking if any Senior moderators were available, none were available. While using core inspector, I was able to determine that the house was built by another player and that Stormkiller had /claimed it himself. In conclusion, I determined that Stormkiller had stolen the house, the minimum punishment for grief/theft is 3 days, so therefore I performed a helper ban and reported it to the staff report tab in discord.