https://imgur.com/EPxeNZA
Rule violated, according to the TebaMU rules set is:
1) During the course of the event "Castle Siege" are prohibited disturbances and teasing competitors by the players who are not enrolled as a competitor!
With all due respect MeTa, you are asking for more explanation when , according to the print posted and your regulations, you can clearly see that he is interfering with Castle Siege event! Let me know if you need more info. I do hope that my complaint meets your expectations.