Kirsty Jones Thailand murder DNA 'breakthrough' hope
9 August 2013 Last updated at 08:07 BST
Police investigating the murder of a woman in Thailand 13 years ago say DNA advances and fresh interviews with witnesses could provide a breakthrough.
Kirsty Jones, 23, from Tredomen, near Brecon, was raped and strangled at a guesthouse in Chiang Mai in 2000.
Det Supt Andy John said developments in the case could lead to a breakthrough in finding her killer.
He and Ms Jones's mother Sue spoke to BBC Wales reporter Gemma Ryall.