Details that emerged during the trial of Gerry Hutch offered an insight into how the tendrils of the Republic's notorious gangland feud have been felt north of the border.
The proceedings placed a focus on Strabane, home of suspected Regency Hotel gunman Kevin Murray, who earned the nickname 'Flatcap'.
Dissident Republican-linked Murray, who died of motor neurone disease in 2017 at the age of 47, was identified as the man wearing a flat cap in CCTV footage from the Regency.
That evidence was provided at the Special Criminal Court by John Caldwell, the senior PSNI detective who was targeted in a shooting in Omagh in February.
Mr Caldwell, who remains in hospital following the attack that saw him shot several times in front of his young son after taking part in soccer training, told the court last October that he recognised Murray from the footage, having come across him during his time working in Strabane.
The senior detective said he was at Dublin's Ballymun Garda Station in 2016 when he was shown an image of the flat-capped gunman from the security footage, and identified it as Murray, who had been arrested in September 2016 in connection with the Regency attack, but an extradition attempt failed when a judge ruled he was too ill to stand trial, as he only had months left to live.
At Murray's funeral in August of the following year, a flower arrangement accompanying his coffin spelled out 'RAAD', believed to refer to the Republican Action Against Drugs dissident group.
Strabane was also the destination allegedly driven to by former Dublin Sinn Féin councillor Jonathan Dowdall and Gerry Hutch in February and March 2016, which the court heard was in order for republican contacts to mediate in the Hutch-Kinahan feud.
Dowdall was a former co-accused of Hutch, but turned State's witness after pleading guilty to facilitating the murder of David Byrne.
Dowdall told the trial that Hutch had directly discussed with him the shooting of Mr Byrne at the Dublin hotel.
Prosecutors at the trial played hours of audio recorded by a gardaí bugging device in Dowdall's vehicle as he and Hutch traveled from Dublin to Strabane in March 2017.
During cross-examination, Dowdall denied promising bomb timers as a "bargaining tool" in achieving republican help in mediating the feud.
