The incident occurred at Blackpool’s Leasing.com Trophy game against Scunthorpe at Bloomfield Road on Wednesday night.
The short clip shows a hooded man attempting to barge through stewards dressed in yellow and orange vests, and as he is pushed back, one steward appears to punch him in the side of the head.
Blackpool have responded by issuing a statement saying they are looking into what happened.
“Blackpool Football Club is aware of an incident that occurred on the concourse at last night’s game against Scunthorpe United and is taking the matter very seriously,” read the statement.
“An investigation into the incident is now under way and the club will provide a further update in due course.”
According to an eyewitness, a group of 20 stewards were removing 10 fans from the ground for standing up when the clash occurred.
The unnamed eyewitness told the Mirror: “Me and my mates were stood up at the game and were told by stewards to sit down.
“When we scored we obviously stood up again to celebrate the goal – we didn’t think there was a problem with that.
Click Here: State of Origin Jerseys