Gardaí are investigating two separate overnight shootings in Limerick city and west Dublin.
At least three shots were fired into a house at Garryglass Avenue, Ballinacurra Weston, Limerick at about 1.00 a.m.
One shot hit the front door; the others went through the front windows. The house was occupied at the time, but nobody was injured.
Detectives from Roxboro Road Garda Station are investigating.
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Gardaí are also investigating a shooting at Donomore Green in Tallaght, west Dublin, last night.
A number of shots are believed to have been fired at a house and into the back of a car parked outside at about 1.40 a.m. The house was occupied but there were no injuries.
The scene has been preserved for technical examination.