Ten teenagers have been arrested in connection with a series of muggings in the city centre over the summer.
The investigation followed a number of assaults, and robberies in the Dublin 2 area over the past few months.
At 7:30am, 70 gardai from 11 garda stations across the city took part in the searches in Dublin and Louth.
Seven boys and 3 girls, all Irish and ranging in age from 14 to 19 were arrested.
They were taken to 8 garda stations in Dublin where they can be held for up to 24 hours.
