Four people were arrested and police investigations have been launched after Norwich City's game at Coventry, where an 11-year-old girl was cut when a coin was thrown.
The Canaries are seventh in the Championship table after 11 games but Saturday's drab 1-1 draw continued a downturn in form and prompted scuffles and arguments in the away end.
Among the four arrests, all of which are understood to be Norwich fans, is a 14-year-old boy.
READ MORE: Woman found out stabbing pain in her face was 'suicide disease'
West Midlands police have asked anyone with information to come forward.
A spokesman for West Midlands Police said: "We made four arrests following Coventry City’s home match against Norwich City on Saturday, October 7.
"Two men, aged 52 and 33, and a 14-year-old boy were arrested for affray following disorder on a bus on Classic Drive, Coventry, while a 43-year-old man was arrested for a racially aggravated public order offence.
READ MORE: Scuffles among Norwich City fans after drab draw at Coventry
"They have all been bailed while investigations continue.
"We are also investigating a public order offence after a steward ejected a supporter and an 11-year-old girl received a cut to the head, after a coin was thrown into the home stand during the game.
"We are also investigating two alleged assaults in the away end involving a fan and a steward."
The angry atmosphere in the away end at the Coventry Building Society Arena has been much discussed among Norwich supporters since the game, with many shocked to see a small number of fans causing issues.
Ben Gibson had scored a late own goal after heavy pressure from the home team in the second half.
Sergeant Lizzie Lewandowski, football unit supervisor at West Midlands Police, added: "We are in the early stages of our investigations and we would urge anyone who may have witnessed the incidents to please get in touch.
"People with information should contact us via Live Chat on our website or by calling 101 quoting crime investigation number 20/876852/23."
Norwich City declined to comment on the matter.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here