Two people were arrested today after scaling the perimeter fence at Shannon Airport.

Air Traffic Control alerted gardaí and airport police to the presence of a 59-year-old man and a 78-year-old woman on a runway at around 4pm this afternoon.

It is understood they were protesting over the use of the airport by the US military.

Today marks the 11th anniversary of the US-led invasion of Afghanistan.

Both were arrested and taken to Shannon Garda Station.

They were released without charge and gardaí say a file is to be prepared for the Director of Public Prosecutions.

There was no disruption to flights at the airport.