Nineteen officers were injured on Thursday night, bringing the number hurt in a week of violence across Northern Ireland to 74.
Police deployed water cannon for the first time in six years after coming under attack again in Belfast.
Crowds rioted on both sides of gates that separate a loyalist area and a nationalist area in west Belfast.
Petrol bombs, fireworks and stones were again used to attack police, who have faced rising disorder since 29 March.
Assistant Chief Constable Jonathan Roberts said that on Thursday night there was “sustained violence directed towards police officers on both sides of the interface over a period of hours”.
He said the majority of injuries to officers were to hearing due to fireworks being detonated close to them, one female officer suffered a broken bone in her foot.
Brandon Lewis, the Northern Ireland secretary, is meeting Stormont leaders in Belfast.
It is understood the Police Service of Northern Ireland’s Chief Constable Simon Byrne will also be on the call to provide an assessment of the latest attacks on his officers.
Kerbs and bollards were ripped up, their remnants turned into weapons.
Police responded by regularly firing their water cannon, but the soaking didn’t seem to stop many of the rioters.
