An incident involving a Birmingham City supporter in the home end of Bristol City’s Ashton Gate during Saturday’s game is being investigated by police.
The scuffle apparently happened after the fan celebrated his team scoring while in one end of the Dolman Stand, close to the Atyeo Stand which housed the away fans.
A video of the incident has since gone viral on social media, attracting more than 1 million views.
Avon and Somerset Police said a number of people were ejected from the ground as a result of the incident, which the force is now investigating.
A spokesperson said: “We’re aware of a video on social media showing a public order incident during Bristol City’s game against Birmingham City on Saturday.
“Officers spoke with a number of people after they were ejected from the ground by security staff following the incident and enquiries into it are ongoing.”
Bristol City’s chief executive Richard Gould said the club was working closely with police and using CCTV to identify those involved.
He said: “Bristol City condemns any form of violence and public disorder and is working closely with Avon and Somerset Police in regards to an incident that took place at the fixture against Birmingham City on Saturday at Ashton Gate.
“Supporters involved in the incident were ejected from the ground and Ashton Gate is utilising its extensive CCTV system to identify further individuals involved.”
Saturday’s game saw Bristol City lose 1-2 to Birmingham City - their second successive home defeat following the loss against Coventry City last week.
Almost 22,000 supporters attended the fixture, a figure boosted by a club initiative offering a discount for friends, and a large away contingent.
There was heavy police presence around the ground, due to the large number of travelling fans and an operation targeting drug use at pubs near the stadium.