Further questioning of the orc reveals little additional information. If the orc is telling the truth, and you believe that he is, then some unknown creature in the forest has disturbed the graveyard of nearby Capoe. And Malcolm's farmstead south of the town may have also been visited by these creatures.
As for Helmang, after a bile-laden rant by the orc, you figure out that Helmang is some sort of adversary sun-god to the orcs.