A 24-year-old man became agitated on an Aer Lingus flight from Lisbon to Dublin, bit another man, fell unconscious, and later died, reports The Guardian.

The Irish Mirror says the man “ran amok” and was restrained after becoming “extremely violent.” A doctor on board attempted to treat the man after he fell unconscious, but he could not be saved.

From The Guardian:

Police said they were investigating after the flight was diverted to Cork when the captain declared a “medical emergency”. [...] It is not known exactly when he died, but police said he was pronounced dead at the scene when the aircraft landed at Cork shortly before 6pm. He was reportedly unaccompanied on the flight.

Ominously, a second man from the flight has been taken to the hospital. The remaining passengers were transported to Dublin via bus.

[Guardian] [Irish Mirror]