Two PSNI officers and a member of the public have been injured during a third night of disorder in Londonderry.
Police say 26 petrol bombs were thrown in the Bogside area.
A car was also set on fire in the area and three people arrested.
It follows two nights of trouble at the Fountain Estate interface.
Dozens of petrol bombs were thrown and officers attacked with missiles over the weekend.
Bricks and bottles were also thrown at homes in the area.
Political parties and community groups have been meeting police to discuss how to tackle the violence.