Multiple sources suggest the Blanchardstown shopping centre was evacuated after a teenager armed with a rifle was spotted inside, although this has not yet been confirmed.
Images emerging from the scene show a large police presence and a number of onlookers stood outside the entrance.
Armed police officers, known as garda in Ireland, are on hand and shoppers are not being allowed inside.
A garda spokesperson said they could confirm a number of gardaí [police officers] are at the scene, but declined to comment on the nature of the incident “for operational reasons”.
A helicopter has been spotted overhead as authorities try to get the situation under control.
Buses are not stopping at the Blanchardstown shopping centre while the situation is ongoing.
No injuries have so far been reported.
More to follow….