FIFA on Friday did not want to comment on a planned visit to the World Cup by its former president Joseph Blatter who is banned from football for six years.
"No comment," FIFA said after a spokesperson for the 82-year-old Swiss had told dpa on Thursday that Blatter was planning to fly to Moscow after being invited by Russian President Vladimir Putin.
It was not immediately clear what match or matches Blatter would attend, but the Group B game in Moscow's Luzhniki Stadium on Wednesday between Portugal and Morocco would be a possibility.
It appears that Blatter could attend the game without an official function as FIFA had allowed the also-banned former UEFA boss Michel Platini the same at Euro 2016. Platini did not however visit a game at the tournament in his native France.
Blatter was FIFA president when Russia was elected World Cup host in 2010. He was ousted in 2015 after a massive corruption scandal at football's governing body which resulted in the charging of several top officials.
He congratulated the hosts via Twitter on their 5-0 defeat of Saudi Arabia in Thursday's opening match.
"Congratulation and compliment for the start of the FIFA World Cup. Impressive victory: 5:0! Russia will be the perfect host and will get the well deserved international respect," Blatter wrote.