Officers are keen to identify five men in connection with disorder at a Derby County match.
The incident happened during a Sheffield Wednesday fixture at Pride Park Stadium on Saturday, October 21.
If you recognise yourself or someone you know in the pictures, or have any information about them, please contact PC Roger Brown of the Derbyshire Football Unit on 101.
Alternatively, send him a message online by visiting the Contact Us section of our website www.derbyshire.police.uk/Contact-Us.
You can also call Crime stoppers on 0800 555 111.