Three men are being questioned in Limerick today in connection with the murder of Kieran Keane in the city last January.
The three were detained in the city last night and are being held under Section 30 of the Offences against the State Act. They can be held for up to 72 hours.
Mr Keane was found shot dead on the side of the road in Drombanna on the outskirts of Limerick on January 29th.