With the death of Pope Celestine in January 1198, the conflict entered a short lull until the new pope, Innocent III, had brought himself up to date, but then the conflict was further escalated. In October, Innocent III placed Norway under interdict and in letters to Eirik accused Sverre of forgery. He also sent letters to admonish neighboring kings to dispossess Sverre. They did the contrary: Sweden continued actively to support the Birkebeiners and John of England sent mercenaries to help Sverre. In 1200 Innocent found it necessary to warn the Archbishop of Canterbury not to accept further gifts from Sverre.