A minute ago Makrell said someone had left Tnt in the spawn building (with the rules in it) and Aanker and I investigated.
We found this (and are currently sweeping community buildings in town for more)
Anyway i detonated it safely and no damage was done to the building but the message is watch out and if you have any info please come forwards...
Also if you find any other tnt in walls then build a cobblestone cage around it and fill it with water. Once the tnt is fully emersed set it off and no damage will be done (doesnt matter if some bits of the tnt are touching surfaces, just that no surfaces of the tnt are in contact with any air).