Blackpool Football Club are conducting an investigation after a video of a steward appearing to punch a fan was posted on social media.
The incident occurred at Blackpool's Leasing.com Trophy game against Scunthorpe at Bloomfield Road last night.
The short clip shows a hooded man attempting to barge through stewards dressed in yellow vests and orange jackets.
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: "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."
"An investigation into the incident is now underway and the club will provide a further update in due course."