Further arrests have been made after “large-scale” disorder before the Old Firm league cup final.
Supporters clashed ahead of the match at Hampden Park, with missiles thrown at police and one officer injured.
Two men have been arrested following an investigation into the incident on December 15 last year in Glasgow city centre.
Warrants were executed at addresses in Cambusland and Barrhead on April 3 and two men aged 18 and 20 were arrested and charged.
The pair are due to appear at Glasgow Sherrif Court on April 4.
Images on social media showed large groups of supporters running down Argyle Street carrying pyrotechnics while being pursued by officers.
First Minister John Swinney described the disorder as “completely and utterly unacceptable,” while Scottish FA president Mike Mulraney branded supporters’ actions criminal and called for a stronger response from the Scottish Government.
A Police Scotland spokesperson stated: “This investigation remains ongoing as we continue to trace those involved.
“I would appeal to anyone who has any information that could assist our investigation to contact us via 101.”
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