More than 1,000 people have taken part in a walk and rally to show support for an off-duty detective who was shot multiple times on Wednesday night.
Det Ch Insp John Caldwell is critically ill and heavily sedated in hospital after the attack.
Many people attending the rally held posters which said “no going back! Unite against paramilitary violence”.
The Northern Ireland Police Federation said he had suffered life-changing injuries.
The Police Service of Northern Ireland’s (PSNI) main line of inquiry is that dissident republican group the New IRA were responsible for shooting the 48-year-old in the car park of a sports complex.
Dissident republicans oppose the 1998 Good Friday Agreement peace deal and continue to use violence to attempt to unite Northern Ireland with the Republic of Ireland.
Five men arrested over the attempted murder – aged 22, 38, 43, 45 and 47 – remain in custody.
The senior detective’s football club, Beragh Swifts FC, organised the walk.
The route from Beragh Swifts FC to Beragh Red Knights GAA club was short but significant – Constable Ronan Kerr was a member of the GAA club when he was murdered in 2011.
On Saturday afternoon, after the walk, police confirmed that a security alert is ongoing in the Beragh area after a suspicious object was found on Dervahroy Road.
The PSNI said it was too early to speculate on whether the events were linked.
The rally, which was organised by trade unionists, was held after the walk on Saturday morning, near the site of a 1998 bombing which was the single most deadly atrocity in Northern Ireland’s Troubles, killing 29 people.
The bombing was carried out by dissident republican group the Real IRA.
‘Hit everybody hard’
Beragh Red Knights GAA club coach Celine Curran said the attack on Det Ch Insp Caldwell has “affected the community as a whole in Beragh”.
“It’s really hit everybody very hard,” she told BBC News NI.
“We’re all coaches at the end of the day. We’re all parents at the end of the day.
“Our children go to Youth Sport as well – it’s got nothing to do with religion.
“We are here in support of a father who was doing a coaching job and a son who has witnessed something life-changing.”
Bovelle Hamilton has known Det Ch Insp Caldwell since he was eight years old and came to show support to him and his family.
“We are absolutely shocked at what happened to him,” she said.
Geoffrey Irwin also took part in the walk.
He said: “I know John personally, I went to primary school with him and also high school in Omagh.”
He added that John was “very dedicated” to the club and gave up his free time to volunteer.
Mr Byrne said it was a significant show of solidarity that showed the “sheer sense of outrage at this pointless and senseless attack”.
Police believe the gunmen made off in a small, dark car, which was found burnt out at Racolpa Road, outside Omagh.
An Garda Síochána (police in the Republic of Ireland) continue to work closely with the PSNI after the shooting, a spokesperson said.
Gardaí previously said it had intensified patrolling in border counties following the attack.
It added that it would provide the PSNI with assistance as required as the investigation continues.
Last March, the the threat level posed by dissident republican terrorism in Northern Ireland was lowered from severe to substantial for the first time in 12 years.
The decision to lower the threat level was taken by the Security Service (MI5) after assessing a wide range of information, independently of ministers.
Since 2010 it had been “severe”, meaning attacks are highly likely. It is now “substantial”, meaning attacks are likely.
The threat level is assessed over a period of time rather than in reaction to one event.
The attack appears to underscore the re-emergence on the New IRA after nearly four years of surface-level inactivity.
In 2019, the dissident republican grouping shot dead journalist Lyra McKee as she watched rioting unfold in Londonderry.
Within a year, its suspected leadership was rounded-up by the PSNI following a surveillance operation run by MI5 using an alleged agent.
Ten individuals are currently awaiting trial on almost 50 terrorism charges as a result of Operation Arbacia.
In the aftermath, the New IRA was viewed as being in complete disarray and last year, for the first time in more than a decade, the government announced the threat level in Northern Ireland was being lowered from severe to substantial.
It might not have sounded much, but it was a hugely symbolic moment.
Attacks, or attempted attacks, dropped markedly: the years 2020-22 saw a virtual absence of activity.
But the New IRA was re-organising and in November it mounted a roadside bomb attack, using military grade explosives, on a police patrol car in Strabane.
The armour-plated vehicle did its job and two officers inside escaped injury.
The attack has now been followed up with the attempted murder, less than 20 miles away, of Det Ch Insp Caldwell.
Dt Ch Insp Caldwell has been the senior detective in high-profile inquiries including:
He had received a number of threats in the past, BBC News NI understands, and was aware his investigations of dissident republican attacks made him a high-profile target.
He continued to carry out his activities as a football coach and whether that was a pattern that aided the targeting of him is of course a matter for the investigation.
The last gun attack on a PSNI officer was in January 2017.
The PSNI officer was hit by automatic gunfire at a petrol station in north Belfast.