The man has been missing since June 23.
Gardaí are seeking the public's help tracing 28 year-old Marcin Zielinski has been missing from his home at North Summer Street, Dublin 1, since on the 23rd of June 2018.
Marcin is described as 5’7’ in height, stocky and with a receding hairline. There are no details available of what he might have been wearing.
Anyone with information is asked to contact Mountjoy Garda Station on 01 666 8600