Police probe man's death on Lisbon to Dublin Aer Lingus flight
Police in the Republic of Ireland have begun an investigation after a man died on a flight to Dublin from Portugal.
A post-mortem examination is being carried out on the 24-year-old's body at Cork University Hospital.
It was reported that he bit another passenger during the two-hour Aer Lingus flight between Lisbon and Dublin on Sunday and had to be restrained.
A Portuguese woman in her 40s who was also on the flight has been arrested on suspicion of drugs offences.
It is not clear if her arrest is linked to the man's death.
A doctor and a nurse treated the man after he became unwell and lost consciousness on the flight.
The captain declared a medical emergency and diverted the plane to Cork airport, landing shortly before 18:00 local time.
About 170 passengers and crew members were taken from the aircraft and were interviewed by police about the incident.