Staffordshire Police criticised over Port Vale v Wolves trouble
Staffordshire Police has been criticised by the county's police and crime commissioner (PCC) for the way the force handled trouble between Port Vale and Wolverhampton Wanderers fans.
More than 30 people were arrested after officers and a police car were attacked following the teams' game in August.
Staffordshire PCC Matthew Ellis said an internal report showed there were "clearly issues" to consider.
Assistant Chief Constable Nick Baker said "lessons must be learned".
Following the game on 31 August, which Wolves won 3-1, trouble started near to Vale Park and around Burslem town centre in Stoke-on-Trent.
Officers were pelted with missiles and a police car was smashed up, leading to 22 people being charged with a variety of offences.
The Independent Police Complaints Commission said it received seven complaints relating to people being bitten by police dogs.
The trouble is also the subject of an independent investigation by Greater Manchester Police, which will publish its report at the end of the month.
'Open and transparent'
Mr Ellis said there were "clearly issues where lessons must be learned by the police or where further actions need to happen".
"Included is better use of specialist advice around the deployment of police dogs, the accuracy of information relayed over police radios and making sure that standard radio protocol is adhered to by everyone."
Mr Ellis added that Port Vale had "questions to answer over inappropriate chanting" by some home supporters.
Port Vale said it was supporting any action taken by police "in apprehending those responsible".
ACC Baker said there were "a number of lessons for Staffordshire Police to learn and we fully support the need to be open and transparent about what we're doing".
"As a result, the Chief Constable will be publishing a redacted version of the report by the end of this week."