 Out of concern for his salvation, Henry then abandoned his father and joined the "salvation community" of the young Bavarians.Another line of research supports the theory that the murder of Sieghard of Burghausen in February 1104 by ministerials and citizens of Regensburg was the trigger for the overthrow of Henry IV.According to Burghausen's relatives and other nobles, the emperor had failed to punish the perpetrators appropriately, proving that Henry IV viewed aristocrats with disdain.