Ashes 2013: ECB urged to examine claims England urinated on Oval pitch Sports Minister Hugh Robertson put pressure on the England and Wales Cricket Board to examine claims from at least two Australian journalists who said they witnessed a group of players walk out on to the pitch just before midnight on Sunday and relieve themselves to the cheers of team-mates. Robertson said: "It it happened, it's not good behaviour." England coach Andy Flower refused to comment when asked about the story on Monday morning. Malcom Conn, covering the Ashes for Sydney's Daily Telegraph, described the alleged incident: "While the centre of the ground was quite dark, lights were on in the grandstands with dozens of people still cleaning up after a late finish which saw the game go beyond 7.30pm. A number of players including Stuart Broad, Kevin Pietersen and Jimmy Anderson took it in turns urinating on the pitch to the cheers of their team-mates. This could be clearly seen from the outside overflow areas of the press box. England enjoyed a night of revelry after the drawn fifth Test gave the hosts a 3-0 series victory. Stuart Broad tweeted a picture of Matthew Prior and Alastair Cook trying to hail a London bus in their whites. Prior, the England wicket-keeper, tweeted a photograph of the players drinking beer on the Oval pitch in darkness on Sunday night. He called it the "best moment of the Ashes!!." Nobody will deny England the right to celebrate but the allegations could sour the aftermatch of their achievement. They had earlier upset Australia with their tactics in the fifth Test when they appeared to play for a draw rather than give the tourists the chance to post their only victory. Captain Cook dismissed the Australian criticism. "It's water off a duck's back," he said. You can say what you want. The guys in the other side are entitled to their opinion. What is important to us is how we go about things and how we perform.