Sheffield United's board have condemned the trouble that flared at the 1-0 home loss to Norwich on Saturday.
A statement from the Blades on Tuesday said incidents during and after the game had seen supporters injured, objects thrown on the pitch and "high-profile Norwich officials threatened and abused."
The South Yorkshire outfit have been reported to the Football Association following the Championship match and could face sanctions, including financial penalties.
The club, who face derby rivals Sheffield Wednesday at Hillsborough on Sunday, have banned seven individuals so far this season, including two from the Norwich fixture.