Man questioned by detectives probing 2006 murder of Shea Bradley
The man, aged in his 40s, was questioned and released by gardai this week.
Shea Bradley, 29, was shot dead in Cabra on March 9 that year.
Gardaí said Mr Bradley died of gunshot wounds in the incident which occurred at a laneway between Regal Park and Blackhorse Avenue.
On Tuesday, a man in his 40s was arrested in relation to this investigation and detained under Section 42 of the Criminal Justice Act, 1999.
A Garda spokesperson said he was released without charge and a file will be prepared for the Director of Public Prosecutions.
“Investigations are ongoing,” they added.