The Department of Health says Iran has reported a new Middle East Respiratory Syndrome case, involving a 67-year-old woman who died.
The World Health Organisation said the patient had stayed in hospital for her underlying illness in June, during which she had close contact with another patient with severe acute respiratory infection.
Saudi Arabia has also reported three deaths among previously confirmed MERS cases.
To date, 837 laboratory confirmed MERS cases have been reported to the WHO globally, including at least 291 deaths.
There have been no confirmed MERS cases in Hong Kong.