Amnesty also said that “numerous sources have reported further acts of torture and other cruel, inhuman and degrading treatment” of other migrant workers from Burma arrested in connection with the investigation.
It added: “The pressure to be seen to be solving an appalling crime that has garnered considerable attention should not result in the violation of rights, including to a fair trial.”
About 2.5 million people from Burma work in Thailand, most as domestic servants or in low-skilled industries.