US student who had been jailed in North Korea was returned to the US in a state of unresponsive wakefulness effectively braindead
It is impossible to get reliable information about the welfare and treatment of foreigners detained in North Korea Washington only learned of Otto Warmbiers condition in early June.
The Ohio coroners office said on Tuesday that it had not been able to determine the cause of Warmbiers death after carrying out an external examination. His parents have asked doctors not to conduct an autopsy.
No conclusions about the cause and manner of Mr Warmbiers death have been drawn at this time as there are additional medical records and imaging to review and people to interview, the coroners office said in a statement.
We do know that the 22-year-old university student was medically evacuated from North Korea on 13 June and flown to the US where he died on 19 June.
No evidence has emerged to support North Koreas claim that Warmbier fell into a coma after contracting botulism and taking a sleeping pill. Doctors in the US said his condition was probably caused by a heart attack that cut the blood supply to his brain.