Two men were executed in Thailand after their conviction for killing two British tourists was confirmed.
The bodies of Hannah Witheridge and David Miller were found in September 2014 on a beach on the popular holiday island of Koh Tao.
Mrs Witheridge, 23, was raped and beaten while Mr Miller, 24, sustained head injuries and drowned after being dragged to sea.
The migrant workers were Zaw Lin and Wai Phyo, also known as Win Zaw Htun convicted of murder and sentenced to death in December 2015.
But their supporters say the Myanmar-based couple, formerly of Burma, was framed and that DNA evidence used by the convicts was abusive.
The lawyers of the convicted men claimed that their first confessions, which were later withdrawn, were taken under torture.
They also said that the men did not know their rights when they were initially questioned.
Lawyer Nadthasiri Bergman told Sky News: "They have not had the opportunity to speak with a lawyer, attorneys or interpreters."
Homicide investigations were controversial at the time, and Thai police were widely criticized for handling the case.
Following the 2015 judgments in Myanmar, protests ensued. Many believed that the two workers were scapegoats.
Human Rights Watch described the beliefs at the time as "deeply disturbing."
But the Supreme Court of Thailand upheld the verdicts and said the verdicts were backed up by forensic and mobile evidence.
Convicted men were sitting there with their feet and hands tied together as they listened to the decision.
Their legal team says they will now ask the King for an apology in the hope that their death sentences will be abolished.
In a statement, after the men were first found guilty, Mr Miller’s Mr Michael said justice had been done. The family believes Thai police conducted a thorough investigation and the evidence against the accused was overwhelming.
Miss Witheridge from Norfolk and Mr Miller from Jersey met on Koh Tao when they lived in the same hotel.
The brutality of the killings has strained Thailand's reputation as a tourist attraction and raised serious questions about the treatment of migrant workers