Supporters have been cautioned about 'tragedy chanting' as Liverpool prepares to welcome Manchester United to Anfield in the Premier League on Sunday, with such incidents leading to a number of arrests in recent years.
Merseyside Police are collaborating with both clubs in preparation for the Premier League encounter between the historic rivals as Arne Slot's men bid to return to form after three successive defeats in all competitions.
A range of policing strategies including prominent police presence alongside more discreet measures such as undercover officers will be deployed to guarantee the safety and enjoyment of the 60,000 supporters anticipated to attend.
Chief Inspector Geoff Stewart said: "As with any game, a comprehensive and appropriate policing operation has been put in place ahead of the match. We have liaised with both clubs, as well as Liverpool City Council and transport partners to achieve this.
"These plans take into account a range of factors including any previous incidents and fixtures between the clubs.
"Sadly, this fixture – and others – have seen people arrested after tragedy chanting and gestures have been witnessed by fellow fans, stewards and police officers.
"I want to make it very clear that football fans who chant about tragedies cause huge distress to those families and people directly affected. "The tragic loss of life is not a subject for tribal point scoring, and this behaviour has absolutely no place in football. Regardless of team affiliation, we will continue to work with clubs to take action to identify and bring any perpetrators to justice.
Both clubs have made direct contact with their fans on this issue and we are grateful for their support.
"The last time these two sides met at Anfield, Merseyside Police arrested eight people on suspicion of tragedy chanting and we will continue to take positive action to root out offenders.
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"I hope the arrests of these individuals sends a clear message and acts as a deterrent to others that you risk ending up in custody, and getting a criminal record and football banning order if you choose to engage in this despicable behaviour."
Chief Inspector Stewart continued: "We have vast experience policing this fixture and there will be a robust policing operation in place on the day with officers ready to deal with any incidents that might arise.
"It will be a busy operation, and we hope that fans attending the match will act as ambassadors for their clubs.
"Please plan your journey and give yourself plenty of time to get to the stadium as early as possible. Road closures will be in place, so we urge people to use public transport to ease traffic congestion.
"As with any large event, we remind the public to be vigilant, trust their instincts and report any suspicious or unusual activity.
"We hope everyone has a fantastic and memorable time and we encourage everyone to be behave responsibly so you can continue to support your club in future."