The two Newcastle University medical students stabbed to death on Borneo had been due to finish their training at the local hospital on Friday, according to local police.
Fourth-year students Neil Dalton and Aidan Brunger, both 22, were on the Malaysian part of the island on attachment to a hospital in Kuching.
Deputy police commissioner Datuk Dr Chai Khin Chung told the Malaysian State News Agency Bernama that the fight in which they were killed broke out after an argument in a bar over the students being too noisy.
He reportedly confirmed four men remain in custody after the 4.15am attack in the Jalan Padungan area of Kuching in the western province of Sarawak.
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The boy was found unconscious and in cardiac arrest and was rushed to hospital where he died.
The victim, who was wearing her uniform at the time, was found knocking on doors nearly four hours after she was abducted.
There will be gales across Scotland and northern England this morning, but these will gradually ease through the afternoon.