Police are appealing for information after a number of stewards were assaulted by fans at the Morecambe FC vs Fleetwood Town derby match on Boxing Day.
Around 15 Fleetwood Town fans challenged club stewards at the Globe Arena, with disorder then continuing as those involved left the Bay Radio stand after the 1-0 defeat by the Shrimps.
Four people aged 16, 18, 20 and 21 have been arrested so far as part of the on-going investigation, but officers are looking to identify others that were involved.
Chief Insp Ian Sewart, of Lancashire Police, said: “The behaviour of those concerned was unacceptable and we will continue to make enquiries to trace all of those involved.
“The vast majority of those who attended the fixture behaved responsibly and it is entirely regrettable that a small number chose to act in this mindless fashion.
“I have set up a team of officers to investigate what occurred and bring to justice those found to have committed offences.
“We are currently examining a number of CCTV images and I am confident we will be able to identify all of those involved.
“All four men arrested were from the Fleetwood area and have been bailed pending further enquires.
“We are currently in liaison with Fleetwood Football Club to identify those outstanding and it is highly likely more arrests will follow.
“I would urge anyone who witnessed what happened or to anyone who was involved to get in touch with the enquiry team.”
Injuries to stewards were reported as “minor” by police.
Anyone with any information about those involved should contact police 101.