A Thai court on Thursday sentenced two Myanmar migrants to death for the murder of two British backpackers on a resort island last year, in a case that raised questions about police competence and the treatment of migrant workers in Thailand.<br />Human Rights Watch called the verdict "profoundly disturbing," citing the defendants' accusations of police torture that were never investigated and questionable DNA evidence linking them to the crime.<br />Win Zaw Htun and Zaw Lin, both 22, have denied killing David Miller, 24, and raping then murdering Hannah Witheridge, 23, last year on the island of Koh Tao.<br />Their defense attorney said they planned to appeal.<br />Autopsies showed that the young backpackers, who met on the island while staying at the same hotel, suffered severe head wounds and that Witheridge had been raped.