Swansea City say they will be investigating "as a matter of priority" a disturbance in the crowd during Saturday's game.
Towards the end of the match against Blackpool a scuffle broke out among Swans fans in the East Stand of the Swansea.com Stadium which was seemingly sparked by the waving of a Union Jack flag. Police officers were seen moving into the crowd to deal with the situation.
A club spokesman has described what happened as "not acceptable" and said such scenes won't be tolerated at the ground.
Read more: See all our Swansea City coverage in one place here
The displaying of Union Jacks by some fans is an emotive issue for many in the Jack Army and especially so when the flags also contain political-charged phrases or symbols.
Swansea City condemned Saturday's scenes and a spokesman said an investigation into what happened would be carried out.
In a statement the club said: "Swansea City is aware of an incident that took place in the East Stand towards the end of Saturday’s Championship fixture against Blackpool.
"The club will be investigating as a matter of priority because the scenes that occurred are not acceptable and won’t be tolerated at the Swansea.com Stadium."
South Wales Police confirmed no arrests were made at the ground but say CCTV enquiries are on-going to identify the fans involved.
The Swans had to settle for a 1-1 draw in the game after a late equaliser from the visitors cancelled out a first-half goal from Joel Piroe.
To get the latest news about Swansea City sent to your email inbox click here.
