Moscow, Mar 21 (IANS): The training session of the Russian football squad, which is set to play a friendly match here against Brazil, was disrupted on Wednesday morning due to a sudden doping control inspection, according to the national teams press service.

The press service reported that a doping control officer arrived at 6.30 a.m. Moscow time and the procedure of doping samples collection lasted at least until midday, while the training session had been scheduled to start at 11.30 a.m, reports Tass news agency.

"Today's training session was delayed since a doping control officer arrived at 6.30 in the morning to collect urine and blood samples," the press service stated. "Since the inspector was alone, the collection procedure continued for more than five hours."

"All of this disrupted the day's schedule and changed the training process, including of footballers with training restrictions within the main squad," the team's press service added.

The friendly match between Russia and Brazil will be played at the Luzhniki Stadium, which is one of the 12 stadiums across the country selected as the venue for the 2018 FIFA World Cup matches.