GARDAI investigating the paramilitary display at the funeral of murdered terror boss Alan Ryan are questioning a man about the firing of a volley of shots over the coffin.
The shots were fired outside Ryan's family home in Donaghmede, on the northside of Dublin, in September.
After the funeral, gardai launched a crackdown on the activities of dissident republicans, codenamed Operation Ambience. This resulted in more than two dozen arrests across Dublin and in counties Meath, Kildare and Limerick.
The latest arrest was carried out yesterday afternoon when a suspect in his 40s was taken to Lucan garda station for questioning under section 30 of the Offences Against the State Act.
He can be held without charge for up to three days.
The man is being questioned about the possession and discharge of firearms at Grange Abbey Drive in Donaghmede on September 8, the date of Ryan's funeral.
Operation Ambience has led to the biggest round-up of suspected dissident activists in the State for several years.
Further raids are expected as anti-terrorist gardai identify and investigate those they suspect are connected to the Real IRA outfit.