Three Belgian men have been charged with terrorism offences including attempting to commit murder in France at the Euro soccer games.
Nine other people were arrested in a huge police operation, which saw dozens of properties across the country raided overnight.
They have since been released.
It's believed a fanzone at a Euro 2016 match with the Republic of Ireland earlier was a target.
Sky's Enda Brady says a group of suspects were seen driving near the area yesterday.