There have been disturbances just outside Belfast city centre, police have said.
Rival crowds gathered in south Belfast
Rival gangs of loyalist and nationalist youths clashed in the vicinity of Cromac Street, near the Markets area.
They threw stones, bottles and paint at each other. Police and community workers worked to keep the sides apart.
Police were also targeted but the area was later described as being quiet. Five petrol bombs were thrown into Donegall Pass police station.
About 100 people gathered in lower Donegall Pass area and a second group assembled in the lower Ormeau Road area.
Motorists were asked to avoid the area during the trouble.