An autopsy found no traces of illegal drugs in the body of a young British tourist found dead on Koh Tao last week, and it is believed medication she took for a chronic illness may have caused her death, the head of the Institute of Forensic Medicine (IFM) said on Tuesday.
A "selfie" taken by Christina Annesley and posted publicly to her Twitter timeline during her Thailand trip
IFM commander Pornchai Suteerakune said on Tuesday staff would try to identify the medication and determine its effects. This would take longer than the drugs test, because it was more complex, Pol Maj Gen Pornchai said.
Christina Annesley, 23, from Orpington in London was found dead in a bungalow on Sai Ri beach of Koh Tao, in Surat Thani province, on Jan 21. There was no evidence of violence. She was on a bed with a blanket over her. Police found medications in her room. She checked in there on Jan 19.
Koh Tao is where two British tourists, Hannah Witheridge and David Miller, were found murdered in September last year. Two Myanmar men have been charged with their murder.
The investigation into the killings was marred by allegations of police incompetence and torture of the two Myanmar suspects, who later retracted confessions their lawyer said were made under duress.