Three men have been arrested by Gardai investigating the murder of Dean Johnson in Clondalkin.
The 21-year-old was shot dead at Harelawn Green on August 24th 2013.
Three men; two in in their 20s and one in his 30s were arrested in Dublin today in connection with the incident.
Two are being questioned at Lucan Garda Station and one at Ronanstown Garda Station.
A total of thirteen people have now been questioned about the killing.
