Last updated on .From the section Football

Kyle Walker admitted to "poor judgement" after photographs were published on Sunday external-link showing the England defender inhaling nitrous oxide.

The Tottenham full-back took what is commonly known as "laughing gas" during a night out in Sheffield this summer.

It is legal but Walker, 23, said: "Now I know the health risks, it was poor judgement on my part.

Nitrous oxide Also know as whippits, laughing gas and hippy crack, nitrous oxide when inhaled can can lead to death as oxygen is effectively pushed out by the gas

Severe vitamin B deficiency can develop with heavy, regular use of nitrous oxide, which can also cause serious nerve damage

The gas is used legitimately to numb pain during medical procedures

"I hope no one's influenced into putting their health at risk by my actions."

Walker, through his Twitter account external-link , added: "Apologies for not commenting sooner on a story about me today. I've been training and am focused on Tuesday's game for England."

The Football Association said in a statement that the player will not face any disciplinary action over the incident.

The right-back was in England's starting XI for the 4-0 win over Moldova and is expected to start the World Cup qualifier against Ukraine in Kiev.

The former Sheffield United player was named as the PFA's Young Player of the Year in 2012 and has won seven caps for England since making his debut against Spain in 2011.