The first sentences have been given in New Caledonia to those found guilty of committing violent acts during last August's clashes near the airport on Mare.
A Noumea court has given jail terms of up to a year to 18 people for their role in destroying and burning shops and cars.
Investigations continue into the violence which erupted after a large crowd tried to dislodge a group occupying the airport, leading to four fatal shootings.
Another 30 people were injured, most of them by gun shots, in clashes seen as the worst in decades.
Police reinforcements are still on Mare where a ban on selling alcohol remains in force.