Pope John IX sanctioned the establishment of an archbishopric and four suffragan bishoprics in Moravia in 898 upon the request of Svatopluk I's successor, Mojmir II. However, no report of the actual consecration of new Moravian prelates has been preserved. Moravia finally disintegrated after the arrival of the Hungarians who conquered its core territory between 903 and 906. A heathen sanctuary built on the ruins of a Christian church at Pohansko suggests that traditional Slavic cults revived following the fall of Moravia.