Crevan Mackin savagely assaulted his partner, but nobody was expecting armed confrontation
Adrian Crevan Mackin had savagely assaulted his partner Siobhan Phillips just two nights before the shooting incident that claimed two lives and left her critically ill in hospital.
Less than an hour before she was shot, Siobhan Phillips had told Garda Tony Golden at her local station in Omeath, Co Louth, how she had been physically assaulted on Friday night.
As a result of the incident on Friday, she had left the house at Mullach Alainn in Omeath, and returned to her family home in Blackrock, outside Dundalk.
She made arrangements to call to Omeath station on Sunday afternoon and arrived there with her father.
Siobhan made a written complaint about the assault to Garda Tony Golden, who was on his own in the station at the time.
Another colleague had been called out to deal with a separate inquiry on Sunday evening.
After the complaint was completed, Garda Golden accompanied Siobhan and her father to Mullach Alainn at around 6pm to ensure she was not physically attacked again while she collected her clothes and a few belongings from the house.
Her father stayed in the car, which was parked just outside the house, while Garda Golden accompanied Siobhan into the building.
Siobhan walked upstairs to collect her clothes from her bedroom.
That is where she was confronted by Mackin, who was wielding an illegally held handgun.
She was shot in the head and fell to the ground.
Garda Golden ran to climb up the stairs after hearing the shooting.
But he was shot fatally by the suspected terrorist as he made his way to the steps. Mackin then shot himself.
Outside in the car, Siobhan's father heard shouting initially, followed by several shots and immediately made a 999 call on his mobile phone.
The first to arrive on the scene was Garda Golden's Omeath colleague, who desperately attempted to resuscitate him.
Officers from Dundalk then reached the house and the grim details of the tragedy began to unfold fully.
Last night investigating officers were trying to establish the exact circumstances in which the three shootings took place.
Ballistic tests are meanwhile being carried out on the handgun, which was taken from the scene by forensic experts. for further inquiries.
Gardai are hoping to determine the history of the firearm and, with the help of the PSNI, establish if it had been used in any other incidents on either side of the Border.
A senior garda officer said last that Tony Golden's function in accompanying Siobhan Phillips to the house was to ensure she was not assaulted while she was collecting her clothing.
As a result of the complaint, this would have been treated as an alleged domestic abuse incident.
It is clear that he would not have known or suspected that he was likely to be confronted by Mackin, armed with a handgun.
The officer said that Garda Golden and Mackin would have known each other.
He stressed that it was not unusual in a small rural area for a garda to travel on his own to the scene of a reported domestic incident.
The station party in Omeath consists of one sergeant and three gardaí, two of whom were on duty there on Sunday afternoon.