The Dublin Coastguard says a search is underway off Skerries Harbour in Dublin for two fishermen.
It is understood they are two local men in their 30s from the Skerries area.
Gardaí say they left Skerries Harbour at around 11am this morning and the alarm was raised at 6.30pm - when they failed to return.
Three lifeboats and a Coastguard rescue helicopter are carrying out the search.
Skerries Coastguard Team are carrying out the shore search.
It was reported earlier that the rescue helicopter located debris in the waters off Skerries.