I just did in inadvertently when they popped some supply chests holding factory ingredients that doubled as pot mats.

Although I have a confession, I cannot confirm that they actually took the materials. In truth, they had several inventories worth of blocks, materials, and items. (I hope they enjoy my fine neterrack collection).

So they may have destroyed most of the items themselves before leaving the city, although if I had to guess the pot mats were retained for the obvious benefits to the cause. (Come on guys, I thought you were just in it for the pvp?)

Anyways, it is criminally negligent of me to leave potion materials in as vulnerable a spot as I did, and I feel Ipso facto responsible for the crimes of Malen and Co. Therefore on behalf of myself and my malpractice, I want to extend an apology to all of Malen and Reiko's Victims for their losses and I stand in solidarity with them as a fellow victim.