A fifth criminal arrested in relation to an alleged campaign of intimidation during the Aaron Brady murder trial is a very close associate of a man shot dead as part of a northside feud.
The suspect, who is in his late 20s and has previous convictions for firearms offences and violent disorder, is being detained at the Bridewell garda station in the north city.
He is a close associate of Coolock criminal Jamie Tighe-Ennis (24) who was gunned down in October, 2017.
The arrested man was previously closely connected to the north inner city gang who were involved in a bitter feud with the mob led by paedophile gangster Christy Griffin.
Senior sources revealed that at least three more arrests are expected, including convicted garda killer Aaron Brady (29).
It is understood detectives planned to arrest Tighe Ennis's close associate earlier this month when they arrested the other four men, but he could not be located during the search and arrest operation carried out on October 8
Last week, Brady was sentenced to 40 years in jail for the capital murder of Detective Garda Adrian Donohoe in Louth in 2013 and he has also been transferred to the maximum security Portlaoise Prison.
The killer was given a further 14-year jail term for the armed robbery of €7,000 at Lordship Credit Union in Bellurgan, Co Louth on January 25, 2013.
The sentence is to run concurrent with his murder sentence.
The four criminals who have been previously arrested were all released without charge, with a file being prepared for the DPP and gardaí announced the fifth arrest yesterday.
A 46-year-old man who was arrested and brought to Raheny garda station earlier this month is currently serving a two-year suspended jail term in relation to heroin possession.
Also arrested was a reckless 29-year-old career criminal from Darndale who has been homeless in recent times and is suspected of "passing on messages from jail to the outside" for cash.
North inner city criminal Glen Holland (37) who is aligned to the Kinahan cartel and who was arrested in Mountjoy Prison, was also released without charge after being quizzed by detectives..
Dean Byrne (28), a violent north Dublin criminal with over 120 convictions who is currently serving a lengthy sentence for aggravated burglary, was also arrested in the same jail.