South Yorkshire police said they were investigating an incident in the tunnel involving Fleetwood Town manager Joey Barton following an English League One (third-tier) match against Barnsley at Oakwell on Saturday.

Soccer Football - League One - Sunderland v Fleetwood Town - Stadium of Light, Sunderland, Britain - September 8, 2018 Fleetwood Town Manager Joey Barton Action Images/Craig Brough