The first Old Firm derby in three years between Celtic and Rangers was marred by alleged sectarianism at Hampden Park on Sunday.
Glasgow police made 19 arrests - 10 of which were for alleged sectarian breaches of the peace - at the Scottish League Cup semi-final.
The clash was the first time the two rivals have played since Rangers' liquidation in 2012 and police presence was increased ahead of the match.
However, fans were heard chanting hateful songs as Celtic ran out 2-0 winners thanks to goals from Leigh Griffiths and Kris Commons.
Officers were also deployed in Glasgow city centre and at major transport hubs before, during and after the match.
Event commander Chief Superintendent Andy Bates, said: "As usual the vast majority of the 50,000 fans were here to enjoy the game and support their respective team; they deserve credit for their excellent behaviour.
"However, again, it is the minority of fans who spoiled the occasion by for example setting off flares and singing sectarian songs."
Eleven men will appear at Glasgow Sheriff Court, while five are the subject of a report to the Procurator Fiscal - a public prosecutor in Scotland - and three have been issued with a fixed penalty notice.