A 46-year-old man was arrested this afternoon in connection with an aggravated burglary that occurred in an exclusive address in Howth last year.
The development follows the arrest of two men (aged 32 and 42) just over four weeks ago in connection with the same terrifying family ordeal.
The robbery took place at a property at Casana View in Howth on Friday 13th in December last year.
Four raiders turned up at the home of dentist Sean Murray and his wife Lesley Geoghegan in the exclusive area of Howth.
The mum and her eight-year-old daughter were tied up in the raid.
Four raiders armed with crowbars showed up at the couple's home in the Casana View housing estate in north Co Dublin.
Two of the raiders knocked on the front door of the home and forced their way in while another two lay in wait at a back door.
Once inside, the raiders tied up Ms Geoghegan (43) and her eight-year-old daughter, who was home sick from school that day.
Using cable ties, the raiders tied the terrified mother and daughter to chairs and threatened them with crowbars while they ransacked the home looking for cash and valuables.
They managed to open a safe in the house and reportedly made off with €30,000 in cash and jewellery.
The mother and daughter were unhurt in the raid but left severely traumatised.
The raiders then stole one of the couple's cars, a Honda CRV, which was later found abandoned at the nearby Howth harbour car park.
Ms Geoghegan managed to free herself and alerted gardai to the ordeal, which lasted about 20 minutes.
the man arrested today is currently being detained at Raheny Garda station under the provisions of section 4 of the Criminal Justice Act 1984 as amended.