Speaking to ITV News about the gymnastics final Lord Coe; "there was not a seat in the house, not even the President of the Olympic committee could get in to his own accredited area. We had over-spill areas."
Talking about the organisation of seating allocation he said: "this isn't an exact science."
Cosmin Constantin Vuc and Paul Gabriel Ramoiu attended Westminster Magistrates Court in central London, where they admitted a charge of illegally selling tickets under section 31 of the London Olympic and Paralympic Games Act 2006.
David Cameron has said that 'we can do better' after empty seats have been seen at Olympic venues.
Mr Cameron said it was possible to "do better" filling empty seats but that they could not be prevented altogether.
"You can never solve the problem completely because there have to be some seats left for the accredited Games family," he said.
"But we can do better and make sure more people get to see more games and also that there are fewer empty seats. We're on track to do that."
As the teams lined up at the beginning of the men's gymnastics final there were many seats still empty in the stands.
LOCOG has claimed that seats are remaining unfilled because they are contractually obliged to by the International Olympic Committee (IOC) to reserve seats for officials, athletes and their families.
But IOC vice president Sir Craig Reedie said that he believed the issue would be "sorted" - either by freeing up the seats for the public or by giving them to accredited personnel like soldiers.
The Times' Giles Coren has said soldiers are filling empty seats at London's ExCeL arena.
blanks seats here at the boxing, so soldiers being drafted in to front rows to make it look better on tv. interesting use of military rsrcesFrom @gilescoren on Twitter: