In the course of his second visit to Baghdad
(November 1091), Sultan Melikshah had convened several Turk beys around him and had some
negotiations with them about the conquests that he planned to realise. Meanwhile, he sent
Sa'd el-Devle Gevher-âyîn and his commanders, Tursek and Yarimkus (Yorunkus) with the
task of the conquest of Yemen and Aden. Emir Tursek and Emir Yarinkus invaded the region
of Yemen and Aden and added them to the lands of the Seljuk State in a swift manner
(1092).
One of the most significant issues in the period of
Sultan Melikshah was the outcome of the Ismaili operational centres within the boundaries
of the Seljuk State. Hasan Sabbah who was the supporter of Ismaili carried out some secret
activities. As a result of these activities, he had captured the castle of Alamut on the
mountains of Elbruz near Kazvin (4th September 1090). Sultan Melikshah sent his commanders
such as Yoruntas, Arslantas and Kizilsarg, etc. against the Ismaili peple in Alamut and
Kuhistan. Howver, the operation against the people of Ismaili was stopped upon his death
(1092).
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