The Garda has said that 25 people, travelling on an Aeroflot plane from Moscow to Havana, have disembarked without permission in Shannon airport.
It is believed the group of Indian nationals, has refused to continue their journey to Cuba.
The group left the plane as it was re-fuelling, but were prevented from leaving the airport as they did not have the necessary documentation to enter the State, but it is not clear if they have requested asylum.
They have been taken to Limerick prison, a designated holding centre for asylum seekers.