Police have been pelted with bottles and missiles after trouble broke out between football fans following a highly-charged local derby game.
Officers arrested 23 people when Port Vale entertained rivals Wolverhampton Wanderers in League One yesterday.
Staffordshire Police said it was "confronted by a significant group of home fans" involved in "violent disorder" who had gone out of their way to target police lines.
The force is now scouring CCTV from the day's fixture, which Wolves won 3 - 1, in a bid to trace everybody who had a hand in causing trouble.
Port Vale said it would fully back any police action against any of its fans involved.
Wolverhampton Wanderers have tweeted about violence following the club's 2-1 victory over Crawley Town in League One.
Hearing reports of bricks being thrown at a Crawley fans coach in City Centre.Wolves officials have spoken to Police-it's being investigated
Unaware yet if those responsible are Wolves fans but either way, sorry to those Crawley fans affected after they were brilliant on the night
Am sure all Wolves fans would join us in condemning the actions of these mindless idiots towards visiting Crawley supporters.
Wolves 2 - 1 Crawley Town - full report
Wolves 1 - 0 Crawley
Wolves manager Kenny Jackett has told ITV News Central there is still a place in the team for want-away striker Kevin Doyle.
Jackett admitted Doyle was likely to be sold as Wolves try to bring their wage bill down but said there was no reason he would not pick the striker while he was available to the club.
Wolves have confirmed that Karl Henry, Stephen Ward, Jamie O'Hara and Roger Johnson have all been transfer listed.
Kenny Jackett, the new Head Coach at the League One side, spoke to the four players this morning, as his squad returned for pre-season training.
The new Wolverhampton Wanderers manager has a different job title - 'head coach' - so a slight change of direction, as Steve Clamp reports.
New Head Coach at Wolves, Kenny Jackett, has today told ITV News Central that changes are inevitable before the next season.
He told Sport Correspondent Steve Clamp, that the club needs 'some adjustment' following two consecutive relegations.
Kenny Jackett has become the fifth manager in 15 months, at Wolverhampton Wanderers. The 51-year-old has signed a 12-month rolling contract to replace Dean Saunders. Speaking of his appointment, he said he was very proud to be the head coach at Wolves.
"It's a big challenge to get the club back to where it wants to be. Every team will come to Wolves and treat it like a cup final. We have to be prepared for that."
Chief Executive, Jez Moxey was full of praise for his new appointment and accepted things had gone wrong in the past.
"I could spend all day talking about the mistakes we've made in recent months. We're a big club, but we're not too big to realise our mistakes."
Jackett will be talking to Director of Football, Kevin Thelwell about the future of the playing squad. With many players on big salaries,there will almost certainly be a clear out, before new names are brought in.