FIFA has warned the Football Association about fan behaviour after "political chants" during England's World Cup semi-final defeat to Croatia.

FIFA's disciplinary committee issued charges on Thursday and, having studied footage, have determined a small minority of those in attendance at the Luzhniki Stadium were guilty of misconduct.

Chants of 'no surrender' were heard during the national anthems, though no details were given of the infringement.

"The decision was taken after having analysed the respective evidence available and considered all factors surrounding the infringement, including the fact that the incident was triggered by a very small group of fans," said an official statement.

The FA has also been fined around £50,000 for breaching tournament rules on marketing and equipment - understood to be the use of branded ankle support socks over approved kit.

It is the second time England have been penalised for wearing the socks, having also been fined the same amount after the quarter-final.

The FIFA statement added: "Two members of the English national team displayed unauthorised commercial branding on playing equipment items during the above-mentioned match.

"FIFA had previously requested The Football Association to cease the activity that led to the breach and had in fact imposed a sanction on 10 July for the same infringement that had been caused by a higher number of members of the English national team."