The mother of missing man Jon Jonsson has said she will not leave Ireland until she takes her son home.

The 41-year-old Icelandic man was last seen in the Whitehall area of Dublin at approximately 11.00am on Saturday February 9th.

He is described as being six 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.

Undated photo of Jon Jonsson | Image: GoFundMe

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.

Gardaí have also released CCTV footage of his last known movements.

Members of Mr Jonsson's family have come to Dublin to assist with the search.

Brother of missing man Jon Jonsson, Daniel, at one of the last places he was seen | Image: Sam Boal/RollingNews.ie

His mother, Hanna, told Newstalk Breakfast she is convinced her son is still here.

"All this help from the Irish people, from my children, my children-in-law, all the local people have helped me stand and have this faith".

"I just have to strong for my son - it's that that keeps me going".

She said she cannot walk very much due to her health, but she has been in touch with several people.

"I have been contacting people, talking to people... and I've been trying to help all the things.

"My mind is thinking and trying to figure out what happened to him.

"There are many, many things - it has been going a lot through my mind.

"There are many things that I know is not correct: he would never disappear on his own, he would never do anything to himself.

"He always let us know".

"I think something else has happened... I know he's here, I feel it - but where I don't know".

"I'm a mother; this is the worst thing so I have been up and down.

"I try to be strong, stay strong, but I have been strong here - and I'm here for my children because we need to stay together."

"I'm not leaving here until I take him home", she added.

Anyone who has 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.