Gardaí investigating the fatal shooting of Neil Fitzgerald in Dublin have arrested a man in his 20s.

Mr Fitzgerald's body was found with multiple gunshot wounds on Sunday morning.

A passerby made the discovery at Hills Lane, a rural road in the Crooksling area of Tallaght.

The deceased was shot sometime between 9pm on Saturday night and 9am that day, gardaí believe.

His death is not thought to be connected to the ongoing gangland feud in the capital. 

The suspect has been detained at Tallaght garda station under section 30 of the Offences Against the State Act, 1939.

Another man and woman arrested on Sunday in connection with the killing remain in custody.

The pair, both in their mid-20s, are being held at Tallaght and Rathfarnham garda stations.