Two police officers have been fired and another could lose his job following an investigation by Samoan police into the death of New Zealander Hans Dalton.
Mr Dalton, 38, was found dead, "upside down in a gallon of water", in a cell at Tafaigata Prison in Samoa on Boxing Day.
A 21-year-old prisoner has since been charged with his murder and will appear in court next week.
However, a police investigation has found officers were negligent when it came to dealing with Mr Dalton, the Samoa Observer reports.
Assistant Police Commissioner Leaupepe Fatu Pula said two officers have been dismissed after appearing before the Police Tribunal, while another is still to learn his fate.
Mr Dalton had been in Samoa visiting relatives when Cyclone Evan struck, and the disaster meant he was unable to take his medication for mental illness.
He was taken to a hospital mental health unit for help but was taken to the Apia police station to be restrained during a psychotic episode.
He was subsequently taken to the prison, where he died on Boxing Day.
It was earlier believed Mr Dalton's death was a suicide.