Businessman headbutted owner of Donegal coffee shop, chasing him round the premises

A businessman who carried out a violent assault on the proprietor of a popular Inishowen coffee shop, headbutting and kicking him before chasing him around the premises in a “moment of madness”, has been handed a suspended prison sentence.

Mark Harkin, of 148 Sicily Park, Belfast, appeared before Buncrana District Court, where he pleaded guilty to charges of assault and provoking the peace arising from an incident at Gap Coffee Co in Bridgend.

The court heard how the 54-year-old defendant, with previous addresses in Newtowncunningham and Derry, had been a regular customer at the coffee shop because his business is nearby.

Mr Harkin, who runs a glass staircase business, admitted attacking Mr Niall Cusack after being asked to leave Gap Coffee Co one morning last year.

Judge Grainne Malone described Mr Harkin’s behaviour as “extremely concerning”. She imposed a three-month prison term, suspended for eighteen months, on condition that Mr Harkin keeps the peace and stays away from the Bridgend establishment.

Giving evidence for the prosecution, Garda Daniel Mulholland of Muff Garda Station outlined how he was called to the scene following reports of an assault at approximately 9.30am on the morning of April 10, 2025.

Upon arrival at Gap Coffee Co, he met with the injured party, manager Niall Cusack, who reported that he had been attacked by a customer known to him as Mark Harkin.

Mr Cusack explained that earlier that morning, he had approached Mr Harkin in response to complaints about his behaviour, which were described in court as relating to general annoyance. Seeking to address the matter calmly, Mr Cusack asked Mr Harkin to step outside the premises so they could speak privately.

Once outside, Mr Cusack informed the defendant that his patronage was no longer welcome at the coffee shop and asked him to take his business elsewhere. It was at that point, however, the court heard, that the situation escalated suddenly.

According to Garda Mulholland’s evidence, Mr Harkin reacted by headbutting Mr Cusack, an attack which drew blood, before proceeding to kick him. The assault did not end there. The defendant then chased Mr Cusack around the building while verbally abusing him.

Garda Mulholland viewed CCTV footage of the incident at the premises. While the footage only partially captured what occurred, he told the court it clearly showed a forceful interaction that knocked Mr Cusack backwards.

By the time Gardaí arrived, however, Mr Cusack had cleaned himself up and there were no visible signs of blood. The injured party did not require medical attention and did not sustain any lasting physical injuries.

Nevertheless, Garda Mulholland confirmed that Mr Cusack later provided a victim impact statement, which was submitted to the court and read by Judge Malone. The contents of that statement, the judge noted, illustrated the significant emotional impact the incident had on him.

In a development that weighed in the defendant’s favour, the court heard that Mr Harkin made early efforts to engage with Gardai following the assault. In fact, before Garda Mulholland had completed his initial enquiries, Mr Harkin had already contacted Buncrana Garda Station and left his details.

Garda Mulholland subsequently spoke with Mr Harkin by phone. During that conversation, the defendant indicated that he was travelling back to Belfast but openly admitted his involvement in the assault. He later attended Buncrana Garda Station on May 13, 2025, where he made full admissions under caution.

During interview, Mr Harkin described the incident as a “moment of madness”, stating that he had lost control of himself during the confrontation. Garda Mulholland told the court that the defendant had been “extremely cooperative” throughout the investigation process.

Mr Harkin was later arrested on foot of a live bench warrant and brought before Letterkenny District Court. The court heard that at the time of his arrest for the assault, there were also two outstanding warrants relating to historic road traffic matters.

In mitigation, defence solicitor Rory O’Brien painted a picture of a previously law-abiding individual who had experienced a complete and uncharacteristic loss of composure.

He emphasised how his client has no previous convictions in either jurisdiction and is regarded as a hardworking businessman who regularly travels between Belfast and Inishowen for work.

Mr O’Brien told the court that the incident must be understood in the context of a heated exchange between two individuals who were familiar with one another. Mr Harkin, he said, had been a loyal and frequent customer of the coffee shop, attending up to three times a day on some occasions.

The defence solicitor said that on the morning in question, Mr Harkin had been in the premises with friends when he felt that he was being “singled out” by Mr Cusack. The defence said there had been a discussion relating to a previous littering incident, during which Mr Harkin felt he was being unfairly accused and publicly “ridiculed”.

Garda Mulholland accepted that there had been a conversation outside the premises about a prior littering issue. However, he maintained that Mr Cusack had acted appropriately in asking Mr Harkin to step outside to discuss the matter.

According to Mr O’Brien, emotions escalated quickly once the two men were outside. His client felt antagonised and victimised, and in the heat of the moment “lost the run of himself”. The solicitor stressed that Mr Harkin fully accepts responsibility for his actions and recognises that his behaviour was wholly unacceptable.

“This was completely out of character,” Mr O’Brien said. “It was an aberration that occurred during a face-to-face confrontation when emotions were running high.”

He added that Mr Harkin had immediately acknowledged his wrongdoing, contacted Gardaí of his own accord, and later made full admissions. He had also expressed a willingness to make amends, including offering compensation to the injured party.

However, Garda Mulholland informed the court that Mr Cusack did not wish to accept any personal compensation. Instead, he requested that any such payment be directed towards a domestic violence charity.

Judge Malone, in her remarks, acknowledged the mitigating factors in the case, including the defendant’s guilty plea, lack of previous convictions, and cooperation with the investigation. However, she made clear that the seriousness of the offence could not be overlooked.

“I appreciate that Mr Harkin has pleaded guilty to this matter and has no previous convictions,” she said. “However, Mr Cusack has written a very moving victim impact statement where he clearly has been affected very badly by this assault.”

The judge emphasised that as the proprietor of the premises, Mr Cusack was entirely within his rights to address concerns about a customer’s behaviour. She noted that he had handled the situation appropriately by asking Mr Harkin to step outside rather than confronting him publicly.

“It’s important to remember who is on trial here,” Judge Malone said. “It is Mr Harkin and not Mr Cusack.”

Describing the defendant’s actions as deeply concerning, she highlighted the nature and timing of the assault.

“To headbutt someone at 9.30 in the morning is extremely serious,” she said. “Anyone is entitled to be in their premises at that hour and not be at risk of attack.”

While the judge ultimately decided against imposing an immediate custodial sentence, she said a prison term was warranted to mark the gravity of the offence. She sentenced Mr Harkin to three months in prison but suspended the sentence for a period of 18 months on strict conditions.

Those conditions include that Mr Harkin must keep the peace, be of good behaviour, and stay away from Gap Coffee Co in Bridgend.

In addition, Judge Malone directed the defendant to pay €500 to Lifeline Inishowen, reflecting the victim’s wish that any financial penalty be used for charitable purposes.

The court also briefly addressed separate road traffic matters involving Mr Harkin, which were adjourned to a later date. The defendant signed a bail bond before leaving the courtroom. He did not address the court during the proceedings.