A teenager was taken to hospital after being struck by a police officers baton following the Barnsley vs Sheffield Wednesday clash on Saturday.
Footage of the incident has been widely shared on social media and shows people clashing with officers.
A young fan is seen with blood pouring from a wound on his head and subsequently had to go to hospital.
Fans clashed with police following the Barnsley vs Sheffield Wednesday match
A police officer also suffered injuries and South Yorkshire Police confirmed it would be opening an investigation.
Chief Superintendent and match commander Sarah Poolman said: “Yesterday, following the Barnsley v Sheffield Wednesday match, our officers responded to disorder between fans outside of the Transport Interchange.
“A full, open investigation, including extended video footage, will take place to ascertain the circumstances surrounding the incident, including the actions that led to a 16 year-old boy sustaining a head injury from an officers baton and an officer being assaulted, sustaining injuries to his stomach and head.
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“The 16-year-old boy was taken to hospital by ambulance. The police officer also attended hospital.
“A 47-year-old man was arrested on suspicion of assaulting an emergency service worker. He has been released under investigation.”
Anyone who witnessed the incident or has video footage, should contact 101 quoting incident 232.
The Championship match at Oakwell finished 1-1 with Cauley Woodrow cancelling out Josh Windass opener.