A murder enquiry has been opened relating to the incident.
35-year-old Mikolaj, known as Nick, died following a vicious attack when a group of armed assailants entered his home and carried out an attack on him and his partner Elzbieta. The injured parties were later taken to Cork University Hospital for treatment.
They are appealing to anyone with information to contact them - in particular, drivers who may have dash cam footage and who travelled in the Maglin, Ballincollig, Ballinora and Waterfall areas between 2am and 5am yesterday morning. O'Sullivan continued by saying Wilk was found with life-threatening injuries in the home and that officers gave emergency medical attention to the homeowner while waiting for the paramedics to arrive. He died later in hospital.
A auto was found burnt out a number of kilometres away in Waterfall and this scene is also being preserved for a technical examination. Police have preserved the scene in the home and where the vehicle was found to carry out forensic investigations.
920,000 displaced in Syria in 2018, highest since conflict began
Islamic State and other militant groups are mingled in the population in Idlib, making it a "highly explosive" situation, he said. Syrian state news agency SANA also reported the attack, and said local fighters had been able to push HTS back.
Fundraiser has been set up online for Mikolaj Wilk to help Cork murder victim's family.
Gardaí found a firearm, possibly a handgun, and two machetes in a burnt-out auto that was used by the gang.
RTÉ reports that Mr Wilk, who was originally from Poland, had lived in Ballincollig for several years and ran a garden maintenance business.