More than 30 football fans have been arrested in Liverpool after violent clashes following Manchester United's 2-0 win at Everton in the FA Cup.
Goalkeeper Roy Carroll was hurt by a missile thrown by an Everton fan
Five officers were injured as police in riot gear keeping rival fans apart were attacked with stones and bottles.
Ill-feeling marked Wayne Rooney's return to Goodison Park with United's goalkeeper Roy Carroll hit by a coin thrown onto the pitch during the game.
Merseyside's Chief Constable Bernard Hogan-Howe condemned the violence.
He said five police officers had been injured during the clashes.
"Certain people anticipated yesterday's game intent on causing trouble and their behaviour afterwards such as throwing missiles at police officers trying to prevent any further disorder is to be condemned, " he said.
"I will be asking for a report into the events of Saturday first thing on Monday morning to review the full facts of the violence.
"I will also be urging a review of the behaviour of both sets of football supporters and talking to the BBC about the kick off time for future football games which will be held on Merseyside."
Everton have vowed to ban for life the fan who threw the missile, believed to be a coin, which injured Carroll.
Police also recovered a mobile phone which was thrown onto the pitch during the game.
After the match, the flashpoint came at Everton Valley where there were running battles between local youths and United fans being escorted back to Liverpool's Lime Street train station.
One of the injured police officers needed hospital treatment.
Public order offences
A Merseyside Police spokesman said a total of 33 arrests were made, including 11 people detained inside the ground.
Police said the arrests were for public order offences or for being drunk and disorderly.
"The incidents were quickly dealt with by the officers at the scene and the escort was established to cause as little disruption as possible," the spokesman said.
Manchester United supporters eventually boarded their trains at Lime Street station shortly after 2100 GMT.
The fifth-round match marked the first time former Everton player Rooney had returned to Goodison Park since his £27m summer transfer to Manchester United.
Meanwhile, Merseyside Police said they were liaising with Everton FC stewards over the attack on Carroll and will be studying CCTV and TV footage of the pitch incident.
Ian Ross, Everton's director of communications, said "99% of the fans" had behaved well.
"It was a disgraceful incident, but an isolated one and we hope the police will be able to deal with it," he said.
He added: "One mindless moron spoilt things for everyone else. There is no place for that sort of thing at Goodison Park and when we discover the culprit he will be banned for life."
He said the BBC had made available video footage for Merseyside Police to study.
The FA has said it would also be liaising with the club and police over the match incident.