Fifa chief refereeing officer Pierluigi Collina states that the integrity of World Cup match officials stands unquestioned after unfounded claims surfaced following Egypt's 3-2 defeat to Argentina.

The Egyptian Football Association requested on Tuesday that Fifa remove the officials from the tournament after the last-16 loss.

The association called for a probe into alleged double standards in officiating after two second-half foul decisions went against Egypt and allowed Argentina to rally from a 2-0 deficit.

Collina noted that open discussion of decisions forms a normal part of football yet added that baseless accusations have no role in the game.

He stressed that the integrity of Fifa World Cup match officials cannot be doubted and warned that such claims risk sparking threats against officials and their families.

Egypt manager Hossam Hassan described the team as treated unfairly and subjected to injustice after the match.

He suggested possible motives to protect the world champions and keep Lionel Messi in the competition.

Collina further stated that Fifa refereeing cannot be swayed by anyone, including president Gianni Infantino, who has backed the team while granting full independence.

Officials make honest calls and strive to perform at their best just as players and coaches do.

Fifa drew criticism for lifting Folarin Balogun's automatic ban after a red card versus Bosnia-Herzegovina, prompting Uefa to label the move unprecedented and unjustifiable.

US president Donald Trump indicated he urged Fifa to examine the ruling.

With Egypt ahead 1-0 in the second half, VAR disallowed a goal by Mostafa Zico after Marwan Attia was penalised for stepping on Lisandro Martinez's foot during the build-up.

A possible foul on Mohamed Salah inside the Argentina penalty area was also overlooked moments before the champions scored the stoppage-time winner.

Although Fifa typically avoids comment on specific incidents, Collina endorsed both calls.

He explained that VAR reviews the attacking possession phase after every goal and recommends an on-field review if a foul with impact is found.

No fixed limit applies to distance from goal or time elapsed since the incident.

In the Argentina versus Egypt match, Egypt's number 19 Marwan Attia clearly stepped on the foot of Argentina's number six Lisandro Martinez.

Collina maintained that a foul remains a foul and VAR can intervene if the referee missed it on the pitch.

If no foul occurs in the build-up, VAR advises accordingly, noting that stepping on a foot qualifies as a foul while normal contact after winning the ball does not.

The referee and VAR viewed the late contact between Mohamed Salah and Julian Alvarez as standard football play.

Subjectivity exists in some calls yet Collina expressed satisfaction with the principle's application across the tournament.