UP: Japanese Shards
The account of Chad, a witness who had seen the group in the dungeon, was that it appeared to be the same people as from the last attack. According to Chad, they were enchanting mysterious experiments for summoning the creature.
He also reported that four men who follow orcish took place in the meeting. And that they constructed a monument beside them of some kind.
While the relation of thse events to the attack remain unknown, there is a strong possibility that there is a higher evil behind the attack.
The witness who recounted these events had since mysteriously disappeared.
From the Town Cryer - The Journal of Ultima Online