An investigation is underway following the death of a man in Walkinstown last night.
At around 9pm, a silver Volvo S40 crashed into a steel barrier. A man in his 30s is believed to be the driver of this car.
Following the crash the man made his way to Templemanor Close - knocked on the door of a number of houses and forced his way into two houses on Templemanor Drive.
Gardaí arrived at the scene and arrested the man when he became aggressive.
As he was being removed from the house he became unresponsive and medical assistance was required.
He was taken to Tallaght Hospital and was later pronounced dead.
A postmortem examination is due to be carried out this morning.
The crash scene and the house where the man was arrested have been sealed off for a technical examination.
Gardaí are appealing for witnesses to contact them.