The body of a man who died in Mexico from "natural causes" was returned to his grieving family missing internal organs, his wife claims.
The 35-year-old, known only as 'Mr Kim', was rushed to a hospital in Monterrey in January, where he was later pronounced dead.
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Authorities say the South Korean national died of natural causes - but his widow fears there's been a cover-up.
Ms Kim says her partner was involved in a scuffle at a karaoke bar on the night of his death.
"More than a week later, I received the autopsy result that says 'no external injuries'. I was dumbfounded," she wrote on the Cheong Wa Dae website.
"That night, I was told by my lawyer that it is possible to change the result of an autopsy or an investigation (in Mexico)."
After the body was flown back home, she asked for another autopsy to be done by the National Forensic Service (NFS) in South Korea. It was then, she says, she got the shocking truth.
"A forensic scientist told me that there were signs of external injuries, including many bruises, but shockingly no brain and no stomach."
Due to the missing organs the NFS could not determine the cause of his death, and Ms Kim is now demanding Mexico returns them.
"My husband was a citizen of Korea. His three-year-old son and 11-month-old daughter have lost their father," she wrote. "Please help me and help my husband."
KBS World Radio has confirmed the South Korean Ministry of Foreign Affairs has also asked Mexican authorities to return the missing organs.
Mexico's cartels have been accused of taking part in the organ trafficking trade, using corrupt medical workers to harvest organs from victims in hospitals.