Family members of Icelandic man Jon Jonsson are in Dublin to help with the search to find him.
The 41-year-old was last seen in the Whitehall area of the city at around 11.00am on Saturday February 9th.
He's described as being 6 foot tall, of medium build, and with short brown hair.
When last seen he was wearing a black padded jacket.
He came to Dublin on holiday with his fiancée to attend a poker tournament.
He left the Bonnington Hotel, formerly known as the Regency Hotel, on February 9th and was seen on CCTV at McGettigan's Bar at 11.07am, exiting onto the Swords Road heading northbound towards the airport.
He was last seen at the exit of Highfield Hospital, heading northbound on the Swords Road, towards Collins Avenue.
Some 10 family members and friends have flown to Dublin to assist with the search.
They've also set up a GoFundMe page to help with costs.
His sister, Anna, says she's missing her rock.
"There's a whole gap in the family, we are really connected - we have a good relationship.
"When I'm about to get into trouble or about to be depressed or something, he calls me before that happens and tells me no problem is too big to solve.
"He's my comfort person".
Anyone who's seen Jon, or who can assist in locating him, is asked to contact Ballymun Garda Station on 01-666-4400, the Garda Confidential Telephone Line at 1800-666-111 or any Garda Station.