 Complete the following phrase:  Al-Mutadid was unable, however, to restore effective caliphal control north of the Jazira in Transcaucasia, where Armenia and Adharbayjan remained in the hands of virtually independent local dynasties. Ibn Abul-Saj, who was now the caliphal governor of Adharbayjan, proclaimed himself independent around 898, although he soon re-recognized the Caliphs suzerainty during his conflicts with the Christian Armenian princes. When he died in 901, he was succeeded by his son Devdad, marking the consolidation of the semi-independent Sajid dynasty in the region. In 900, Ibn Abul-Saj was even suspected of plotting to seize Diyar Mudar province with the co-operation of the notables of Tarsus, after which the vengeful Caliph ordered the latter arrested and the citys fleet burned. This decision was a self-inflicted handicap in the centuries-long 