Police officers have launched a fresh appeal to speak to a range of people in connection with outbreaks of "criminal disorder".
The incidents broke out across Victoria Square and Bradshawgate in Bolton, Picadilly Gardens in Manchester, Newton Heath and Rochdale in late July and early August.
Officers say that they have made 122 arrests, leading to 102 charges and 60 people being convicted, but they still need the public’s help.
Detective Chief Inspector Jill Billington, of Greater Manchester Police’s serious crime division, said: “The criminal disorder we saw in areas of Greater Manchester a month ago was shocking and struck fear right in the heart of our communities.
“Since then, we’ve worked through thousands of hours of video footage to identify and bring to justice violent individuals who assaulted police officers, members of the public, and damaged the property of local businesses, police, and people just going about their daily lives.
“Your help has seen more than 180 reports of information submitted to us which has helped identify 124 suspects.
“Many have been convicted in court and are now serving long prison sentences.
“Your help in achieving this swift justice has no doubt helped stop this disorder escalating.
The arrests have come after police worked with the Crown Prosecution Service and other organisations.
They say that incidents they have investigated have included a bus driver who was allegedly assaulted in Newton Heath.
There were also cases where officers allegedly had a plank of wood of thrown at them Piccadilly Gardens and officers who allegedly had bricks and bottles thrown at them in Newton Heath.
Police say that specialist officers and staff have reviewed thousands of hours of CCTV, body-worn video, and footage on social media.
This has been to gauge a comprehensive picture of the disorder that took place and the people responsible.
They have received more than 100 reports from members of the public.
But officers have now appealed for further information about the identity of the remaining 18 people we are wanting to speak to relating to the outbreaks of disorder.
DCI Billington said: “There are still some people out there who haven’t yet received a knock on the door from us, and we’d like to speak to them about the disorder.
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“Many of our suspects may have been through court, but we’re not done yet.
“If you recognise any of these people then please get in touch and help ensure all those involved are brought to justice.”
Anyone with any information can call police on 101 or 999 in the event of an emergency.
Alternatively, witnesses can call independent charity Crimestoppers anonymously on 0800 555 111.
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