A 39-year-old man killed in Clondalkin in Dublin last night was reportedly shot as he tried to reach his home.
A number of shots were fired before the gunman fled in a car, which was found burnt-out a short distance away.
Jason Carroll lived in the house on Cherrywood Drive with his partner, their two young children, and her teenage son.
Garda sources said Mr Carroll was known to them and they are investigating a possible link to the killing of Dean Johnson in Clondalkin last weekend.
A large section of the Cherrywood estate has been sealed off and a number of cars covered with tarpaulin ahead of a forensic examination.
The shooting occurred at around 10pm last night.
Mr Carroll was taken to Tallaght Hospital, where he was later pronounced dead.
Gardaí have renewed their appeal for witnesses to contact them in Clondalkin on 01-6662071.