A man is due to appear in court tomorrow charged in connection with an incident on board an Aer Lingus flight from Milan today in which a security alert was declared at Dublin Airport.
It is understood a passenger on the plane claimed he had Ebola after writing it on a coffee cup.
Gardaí said they attended the scene of a public order offence shortly before 1pm after it was reported that a passenger on board the flight had shown a plastic cup to a flight attendant marked "Attentione Ebola".
There were 142 passengers on board at the time, gardaí said.
Following the incident, two women, aged 51 and 23, and a 56-year-old man were arrested.
Both women have been released without charge. The man is expected to appear in court at 10.30am tomorrow morning. He is being detained at Ballymun garda station.
In a statement to RTÉ News, Aer Lingus said: "A security issue arose on flight EI 433 (Milan to Dublin).
"As a precaution passengers and crew were temporarily held on board the aircraft at Dublin airport while the matter was investigated."
Gardaí said the plane remained on the apron for one hour while three of the passengers were medically examined.
Following consultation with the Health Service Executive, it was established there was no evidence of a health risk.