Police have been attacked with bricks and bottles in the Bradbury Place and Sandy Row areas of south Belfast.
Roads have been closed with reports of around 100 people gathered in area.
Loyalists have gathered in a number of locations to hold demonstrations.
#Belfast – Shaftsbury Square has been reopened to all traffic. However motorists should now avoid the Sandy Row and lower Donegall Road areas due to an ongoing incident. (20:51) https://t.co/vKg3Hcp8KA
— Trafficwatch NI (@TrafficwatchNI) April 2, 2021