A woman has made an appeal on social media to find her missing husband, Mark Andrew George.
Polly Donoghue said: "Have you seen Mark?
"I need help locating my loving husband Mark Andrew George.
"Mark is missing from Donnybrook, Dublin since Monday.
"He is without a car, yet we are searching nationwide.
"Mark is 190cm tall with black hair and a dark complexion, he is maybe wearing glasses.
"Mark is American, and speaks with an accent.
"Any information is hughly appreciated."
Please contact Donnybrook Garda Station on 01 6669200.