I'm neither going to tell you seriously that they are really exist nor it is mere fairy tale.
It is an open ended story. I'm here to provide you true information. Conclusion is with you...
First I'm going to post some sri lanakan new paper articles which are related to UFO sighting in Sri Lanka.
There for you can get a small idea of this.
UFO sightings have been reported from various parts of Sri Lanka over the years. Hundreds of people have seen UFO phenomena over Sri Lanka according to professor Chandana Jayaratne of the University of Colombo who has investigated some cases of UFO.
Some predict that the Extra Terrestrials could either be on the lookout for technology that was used to construct sacred buildings or may be an attempt to locate the "Vishva Yathura" (Key to the Universe)!