Gardaí investigating the murder of Dean Johnson in Dublin have made a further arrest.

The 25 year old man was detained this evening in Dublin.

He is the third man arrested today in relation to the investigation, after two men in their 20s were arrested this morning.

One can be held for seven days at Lucan Garda Station under Section 50  of the Criminal Justice Act, while the other man is detained in Ronanstown Garda Station under Section 30 and can be questioned for 72 hours.

Mr Johnson was gunned down at Harelawn Green, Clondalkin on August 24th last year.

Today's arrests bring to eight the total number of people detained in connection with his killing to date.