In a statement released tonight the PSNI claimed the blast bombs were thrown by masked men in the Lower Newtownards Road area.
"The blast bombs thrown in the east Belfast area earlier this evening were thrown by masked men from the area of Pitt Park at police lines on the Lower Newtownards Road," a spokesman said.
More top news
Medical charity worker relates how he and colleagues tried to save patients and staff following devastating air strike.
Union leaders and officials from a range of campaign groups will address demonstrators as Conservative party conference gets under way.
Teachers union says workload, pay and low morale drive educators away from the profession.