A 16-year-old boy has been handed a six-month sentence and become the first person to be jailed for taking part in violence at a protest in Jobstown in Dublin.

Acting Tánaiste Joan Burton and her entourage were allegedly trapped in a car following a graduation ceremony on the afternoon of the 15th of November 2014.

An anti-Irish Water demonstration was taking place at the time which delayed her for two hours.

Gardaí allege protesters surrounded the car and there were a number of violent incidents during which officers were pushed and missiles thrown.

The boy, who was 15 at the time, pleaded guilty to criminal damage to the rear window of an unmarked garda car which he jumped on, and violent disorder.

Judge John O'Connor imposed a six-month sentence on the boy who cannot be named because he is a minor.