Police have said they are working to identify supporters responsible for criminal damage at Carrow Road ahead of the East Anglian derby.
Video footage has been circulating on social media of an incident, reported to have taken place in a concourse at the away section of the stadium.
A spokesman for Norfolk Police said five supporters have been arrested in connection with the criminal damage incident, and have been released under investigation pending further enquiries.
'Officers are also working to identify others in connection with this incident,' a spokesman said.
In total seven Ipswich Town supporters and five Norwich City supporters were arrested during the East Anglian derby on Sunday, for offences including criminal damage, assault, and drunk and disorderly behaviour.
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