The PSNI has confirmed it has launched an investigation into the sudden death of a man in Northern Ireland.
It is believed the man died in Londonderry on Monday.
A PSNI spokesperson they were awaiting the results of a postmortem.
"Police are investigating the circumstances surrounding the sudden death of a man in the Balliniska area of Londonderry. "
"A post mortem is due to take place to determine the cause of death.
"There are no further details at this stage."