The International Federation of Football Associations (FIFA) has announced that the analyses of all doping tests conducted before and during the competition had yielded negative results.

The World football governing body’s Medical Committee Chairman, Michel D’Hooghe, said in a statement that the “testing programme in place this year was the largest ever conducted for a FIFA World Cup.

He explained that this close cooperation with other testing agencies allowed a significant increase in the number of tests on participating players.

He added that FIFA’s Athlete Passport Management Unit, composed of independent experts, reviewed the data of players to detect potential deviations that may indicate an abuse of performance-enhancing drugs.

All samples collected were analysed at WADA-accredited laboratories.

Most of the analyses, particularly of all the samples collected during the competition, were carried out at the laboratory in Lausanne, Switzerland.

FIFA said that in order to ensure a tamper-proof operation, it transported all the samples in a secure box.

According to it, this box is of a type that is normally used by banks to transport money and can only be opened with an electronic key.