Five gang members questioned over murders
They were arrested at Wheatfield, Cloverhill, Midlands and Limerick prisons under Section 42 of the Offences Against the State Act.
They were quizzed about the murders of Roy Collins in April 2009, Shane Geoghegan in November 2008, and James Cronin in April 2008. Roy Collins was targeted because a relative gave evidence which led to the jailing of gang leader Wayne Dundon, while Shane Geoghegan was shot when mistaken for a drugs dealer who lived near him at Kilteragh, Dooradoyle.