The Garda Síochána Ombudsman Commission has begun an investigation into a shooting in Dublin in the early hours of this morning.

It is believed an off-duty garda and three other people were involved in the incident in Portobello at around 2am.

GSOC said that during the incident an official garda sidearm was discharged and a man was injured.

He was taken to St James's Hospital, where his injury is described as non-life threatening.

The scene was sealed off and investigators from the garda watchdog were on site this morning.

GSOC has appealed for witnesses to the incident to contact 1890 600 800.