Dyfed-Powys Police said it and the Foreign Office had asked Thai authorities to investigate the claims made on YouTube by an Australian who used to live in Thailand.
In the internet video, he states the professor and another Thai man were seen lurking outside the Aree Guest House in Chiang Mai where Kirsty was staying at the time of her murder.
The other man, a Thai tourist police officer, has already been ruled out by a DNA test.


Read more: Eleven years on: University lecturer named as suspect in backpacker Kirsty Jones murder | Mail Online
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