The FAI have condemned "vile and horrific racist abuse" aimed at members of the Republic of Ireland Under-15s boys squad.
The social media attacks came in the wake of Ireland's back-to-back 6-0 international friendly victories over Latvia.
In a statement the FAI confirmed that they are working with gardaí and social media companies to identify those who made the racist posts and that they have offered support to the affected players and their families.
FAI Chief Executive Jonathan Hill said: "There is no place for racism in football. To see such young players targeted in this manner is particularly sickening and the FAI will do everything in our power to ensure the perpetrators are identified and held responsible for their disgraceful actions."
FAI President Gerry McAnaney added: "I was proud to see these players represent Ireland in their Under-15 international against Latvia in Whitehall on Tuesday and proud of the delight they took in representing their country.
"I can assure their families that as an Association we fully support all our players. We cannot tolerate such behaviour in society and sport."
The FAI added that they will not be commenting further while the matter is under investigation.