The man (aged in his 40’s) arrested yesterday in connection with the investigation, has since been charged.
He is expected to appear before Tallaght District Court at approximately 10.30am this morning.
A man hijacked a woman's car in Walkinstown and staff were threatened in Bray and Rathnew.
A man approached a woman in her 30s driving a black Nissan Quasquai on St. Peter's Road in Walkinstown and threatened her at around 7.45 on Saturday night.
She managed to get out of the car but the man took control of it and drove off.
Half an hour later, a man burst into a store on the Dublin Road in Bray brandishing an implement - he threatened staff and robbed alcohol.
Then, a shop in Rathnew was robbed when a man also threatened staff with an implement and took cash.
Gardaí believe the car used during the two robberies was the black Nissan Quasquai that had been stolen earlier.
A man in his 40s remains in custody this morning at a Dublin Garda station, and Gardaí are appealing for witnesses.
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