Gardaí in Dublin are still searching for a missing man who they believe to be armed.
The public has been warned not to approach 19-year-old Jack Dinan who has been missing from Ennis in County Clare since 10am on October 31st.
Mr Dinan is believed to be armed with a rifle and ammunition.
Gardaí have said that he is under medical supervision and may appear agitated or confused.
The Blanchardstown Centre in Dublin was evacuated yesterday evening after a security alert was raised at around 5pm.
Gardaí outside the Blanchardstown Centre in Dublin after it was evacuated, 01-11-2017. Image: Sam Boal/RollingNews
Gardaí said the evacuation came as a result of a possibly sighting of an armed individual in the shopping centre car park.
All of the roads entering the centre were kept on “complete lockdown” as a number of armed garda units attended the scene.
"Numerous gardaí units attended the scene and evacuated the shopping centre in the interest of public safety," said a garda spokesperson.
"A full search of the shopping centre was carried out and no armed person was located.
"Gardaí wish to thank the public for their assistance in the matter."
Gardaí are currently treating the security alert as a separate incident.
The centre remained closed overnight.
Mr Dinan is described as being 6ft tall of slim build with black hair.
He wears a tooth brace on his upper teeth.
Gardaí said he may have been wearing a grey hoodie top, grey spot camouflaged jacket when he left home.
His family have urged him to contact home.
While investigators are appealing for help in tracing Mr Dinan, they have warned the public not to approach him and to immediately contact Gardaí should they have any information regarding his whereabouts.
Anyone with any information should contact Gardaí at Ennis Garda Station on 065 6848100 or the emergency numbers 999 or 112.