A man has been arrested on suspicion of the murder of 36-year-old Sandra Boyd, who was shot dead at her parents' home in Dublin on Saturday night.
The mother of five was shot in the chest with a pistol at the back of the house at Collins Place in Finglas East.
She was taken to the Mater Hospital but was pronounced dead a short time later.
Gardaí suspect that someone in the house had access to an illegal firearm and that Ms Boyd may have intervened before she was shot.
A firearm has been recovered and has been sent for ballistic testing.
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A number of people were in the house at the time of the shooting and gardaí had been looking to speak to one person in particular who knew Ms Boyd and who left the house after the shooting.
This morning a man in his late 20s was arrested in Dublin on suspicion of murder.
He is being held at Finglas Garda Station and can be questioned for up to seven days.
Gardaí are also investigating if shots fired at a nearby house in a separate shooting incident last Tuesday were intended for the house where the firearm was found.
