Olympic and Paralympic organisers have been forced to suspend the sale of tickets because of technical issues with their website.
Tickets were originally available via a public ballot with many hoping to attend the games being unsuccessful.
Reselling tickets without permission of the London Organising Committee of the Olympic Games (LOCOG) is a criminal offence under laws protecting the games, their trademarks and certain protected terms.
In order to ensure holders of the sought-after tickets could legally resell any unwanted tickets, LOCOG has partnered with Ticketmaster to provide a sanctioned resale website.
Site users have complained that tickets continued to show as available hours after the were bought, while others have complained of site performance problems.
In a statement LOCOG said: “We have told Ticketmaster to suspend the resale system whilst they investigate some issues customers have been experiencing.
“We want buying and selling Olympic and Paralympic tickets through Ticketmaster to be a good customer experience, and so we will re-open the site once Ticketmaster have resolved these issues.”
Earlier this week LOCOG confirmed it had oversold 10,000 tickets for the synchronised swimming events and was offering attendees tickets to alternative events.
Meanwhile the Met Police have warned that buyers using unappraved resellers “risk being ripped off, not getting the ticket you wanted and paid for, and even having your personal details stolen and used in other crimes.”