Analysis of information sources in references of the Wikipedia article "History of Socotra" in English language version.
As for Śakūrid (S³krd), this name appears to be the basis of the Greek name for Soqoṭra, Dioskouridēs, via a reconstructed *Dhū-Śakūrid.12.
On Saturday, the STC announced it had seized government facilities and military bases on the main island of Socotra, a sparsely populated archipelago which sits at the mouth of the Gulf of Aden on one of the world's busiest shipping lanes.