London's police force says Scotland Yard detectives will travel to Thailand to help with the investigation into the killing of two British tourists.

Police said in a statement Saturday that officers would work with Thai police "in ensuring that whoever murdered David Miller and Hannah Witheridge is brought to justice in a fair and transparent way."

The battered bodies of Witheridge and Miller were found Sept. 15 on a beach on Koh Tao island.

Thai police say two migrant workers from Myanmar have confessed to the killings, but last week the British government summoned a senior Thai diplomat to express concern about the way the investigation had been handled.

The British delegation follows talks this week between Prime Minister David Cameron and Thai leader Prayuth Chan-ocha.