A number of people have been treated by medics after flares were lit in the stands at Portman Road on the day of the East Anglian derby.
Police said all the people affected by the flares were 'now said to be OK'.
A 34-year-old man from Ipswich was arrested for discharging a flare in the stands in the ground, and a 45-year-old man from Norwich was arrested for possession of a lit flare inside the ground.
Chief Superintendent Louisa Pepper said: 'A very small minority appeared to be set on causing trouble and officers made several arrests during the course of the policing operation today.
'We said before the game that we would not tolerate anti-social behaviour, violence, racial chanting, mindless vandalism or any alcohol-fuelled disorder and the vast majority of the 25,000 who attended were responsible and respectful.'
Other arrests included:
• A 23-year-old man from Norwich, who was arrested on suspicion of possession of class A drugs.
• A 23-year-old man from Colchester and a 57-year-old man from Witham, who were arrested for breaching a section 35 dispersal notice to leave a designated area following anti-social behaviour.
• A 29-year-old man from Felixstowe, who was arrested on suspicion of affray
• A 23-year-old man from Norwich, who was arrested on suspicion of assault.
All have been taken into custody at Martlesham Police Investigation Centre.
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