Three men are being questioned by Gardai in Limerick under Section 30 of the offences against the state act.

A 39-year-old man arrested in Annacotty, Co Limerick on Wednesday in connection with the shooting of Ciaran Keane has been released without charge.

Detectives are at Limerick's Mid-Western Regional hospital to interview Owen Tracey, the man found stabbed after a fatal shooting near the city on Wednesday night.

Gardai in Limerick have revealed that the man murdered in the city last night was spoken to during the investigation into the abduction of the Ryan brothers.