Crystal Palace have been fined by the Premier League over an allegation that information regarding the Cardiff line-up prior to their encounter in Wales last season was leaked to the London side.

The Premier League board upheld a complaint from Cardiff, who alleged that team information was leaked to officials at Palace prior to the match on April 5.

“The Premier League board has considered a complaint from Cardiff City regarding the conduct of a Crystal Palace official,” the league said in a statement.

“The board found that Crystal Palace breached Rule B.16 and has exercised its summary jurisdiction and fined the club.”

Rule B.16 states that “in all matters and transactions relating to the league each club shall behave towards each other club and the league with the utmost good faith.”

With both teams battling to stay in the Premier League, Palace won the game in Cardiff 3-0. 

Palace could face a fine of up to £25,000.

Cardiff had no comment to make on the matter.