Police have received reports of forged tickets being sold for today's huge Premier League clash between Cardiff City and Liverpool.
Chief Inspector Joe Henderson-Jones warned fans they risk being denied entry into Cardiff City Stadium if they haven't bought their tickets from a reputable source.
Speaking on social media on Sunday morning ahead of the 4pm kick-off, he said: "Reports of forged tickets being sold. If you haven’t secured your ticket through a reputable source or unsure of its validity please contact the club to check it.
"Due to a sell out, forged tickets can only be turned away."
It follows a huge demand for tickets ahead of a match that could have major repercussions at both ends of the Premier League table.
Cardiff City reignited their survival hopes with victory over rivals Brighton in midweek, while Liverpool must win following Manchester City's victory over Tottenham on Saturday.
Tickets for the match are still being sold for prices up to £1,000 on resale site StubHub , after we reported the extraordinary prices being quoted earlier this week.
A South Wales Police statement added: "Please do not buy tickets for today’s game from a ticket tout. We’ve already received several reports of forged tickets. The bar code is from a previous game & will be refused at the turnstiles. We will have officers on hand to assist you but forged tickets will be refused entry."
Liverpool have a huge following among Welsh-based fans, with the game a sell-out and the prospect of some Liverpool supporters getting tickets in the home sections a real possibility.
Earlier this season, seven Manchester United fans were ejected from the home section of Cardiff City Stadium.
Video emerged of one being kicked out and later chased through the concourse by Cardiff fans .
A Cardiff City spokesperson said in relation to the video: "We removed the supporter for his own safety and it was obviously a very difficult situation to deal with.
"The size of Manchester United's fanbase and the game mean supporters can acquire tickets from all different sources, but our stewards dealt with it in a swift and efficient manner."
