Of note is that immediately after being asked about the blocks, he and his friend Mel1545 (a nickname, I am unsure of his real name) became extremely confrontational, calling both myself and Catty all sorts of rude names and things for suggesting that we were going to report them. We offered to include in the report if he wanted to give the blocks back, and told him that if he did so there might not be a very harsh punishment, but he refused, only agreeing to do so later after he found out we were actually going to report him for it.
The chat records begin at about 8:55 AM GMT -6 and end at about 9:25 AM GMT -6, in case you'd like to review them.