Police have launched an investigation after a protest in Tameside turned violent and left nine people injured.
Around 60 people attended the first Eritrean Cycle Festival which was held at the Curzon Ashton football stadium complex on Saturday afternoon.
Former professional cyclists from the east-African country and fans from all over England and northern Europe were in attendance.
However, the afternoon spiralled into an 'appalling act of violence' and officers were called to Tameside Stadium to reports of fighting.
During an organised protest near the stadium around 30 people became involved in disorder where a number of objects were thrown and people were assaulted.
Response and neighbourhood officers attended along with the Tactical Aid Unit, dog section and Roads Policing Unit.
A total of eight men were arrested on suspicion of public order offences. They remain in custody being questioned.
Nine people suffered what are believed to be minor injuries, including two teenagers.
Chief Inspector Andy Harty, from GMP’s Tameside borough, said:
Meanwhile organisers of the event, the Eritrean Cycle Festival, told they Manchester Evening News their event had nothing to do with politics.
They expressed disappointment that the festival, which was expected to last until Sunday, has had to be cancelled due to safety fears, after the protesters stormed the stadium.