Wicklow town man Barry Corcoran remains missing over three weeks after he was last seen.
There were a number of reported sightings in south Dublin and the inner-city last week which were followed up by the Gardai.
However, none of those sightings could be confirmed as the missing 38 year old.
He is 5'1 in height and of medium build, with grey hair.
When last seen he was wearing dark jeans, black puma runners and a light blue mac.
His last confirmed sighting was on July 6. On the day he went missing he travelled from Wicklow town to Dublin for a party.
It is understood that he rang a local girl from Wicklow town and told her he would be returning home the next day but he never made it.
Anyone with any information is asked to contact Wicklow Garda Station on (0404) 60140 or alternatively the Garda Confidential Line 1800 666 111.