A man and a teenager are being questioned by police about rioting in the Ardoyne area of north Belfast on 12 July.
The disturbances left more than 100 police officers and a number of civilians injured.
Trouble flared as a controversial Orange Order parade passed along the Crumlin Road.
Police confirmed they had detained a 22-year-old man and a 15-year-old youth in the Oldpark area of the city. They are being interviewed about public order offences.
