DNA testing of Varot Toovichien, the son of influential  Koh Tao village headman and owner of AC Bar on the resort island, by the Institute of Forensic Medicine of the  Police General Hospital showed  no match with the DNA samples found on the slain British backpacker Ms Hannah  Witheridge, and samples collected at other scenes.

But the police said they have to wait for the testing results of three other hospitals, Chulalongkorn, Siriraj, and Ramathibodi.