"Some Muslims hold the belief that the False Messiah (al-Masihah al-Dajjal), who will emerge near the end of time as a great tribulation, is currently imprisoned on an unknown island somewhere in the world. This was indeed reported by the companion Tamim al-Dari (ra) and confirmed by the Prophet (s).
Yet since practically all of the ocean has been explored, no one has been able to find the island or the False Messiah"
https://www.abuaminaelias.com/where-is-the-island-of-dajjal/
"He said, “Now I’m going to tell you about myself. I’m Christ [Jesus (as)].”
He said, “Now very soon, based on the signs you’ve shown me, I’m going to be given permission to leave and I’m going to come out."
https://quransigns.wordpress.com/2016/03/22/the-island-of-dajjal-by-bilal-assad/
"I am going to tell you about. myself and I am Dajjal and would be soon permitted to get out and so I shall get out and travel in the land, and will not spare any town where I would not stay for forty nights except Mecca and Medina as these two (places) are prohibited (areas) for me and I would not make an attempt to enter any one of these two. An angel with a sword in his hand would confront me and would bar my way and there would be angels to guard every passage leading to it"
https://islamicreminder.org/the-island-of-dajjal-the-anti-christ/amp/
"There is, in fact, another location in Asia’s southern extremity which for hundreds and thousands of years has also been referred to as a home of the King of the World and the place he will reemerge from. This is the tiny island nation of Sri Lanka, where within the small temple village of Kataragama the adherents of three major religions currently join together to worship this deity who has been called “King of the World.” In the traditions of the Moslem Sufis, who refer to him as al-Khadir, it is believed that this semi-mythical deity makes a public appearance at Kataragama every five hundred years. The world has currently reached the end of another five-hundred-year cycle, which is why many Sufis are making annual visits to Sri Lanka in hopes of catching a glimpse of their deity."
http://peacock-angel.org/pinkham.king.of.the.world.htm