Three men have been arrested following the discovery of a number of devices at an apartment block in Tralee this evening.
It is believed the devices may be components for explosives.
This has not been confirmed and they have not as yet been examined.
It is understood that gardaí were acting on intelligence when they went to search the Atlas House complex at McCowen's Lane in Tralee this evening.
Atlas House is used as a hostel for asylum seekers and foreign nationals. Gardaí sealed off one of the apartments after a number of devices were found.
The three men can be held for up to three days.
All three are aged in their 30s and 40s and it is believed that at least one of them has come to garda attention since his arrival in this country.
A team from the Garda Technical Bureau in Dublin is expected to arrive in Tralee before midnight to begin an examination of the devices and the apartment where they were found.