LONDON - Some 900,000 Olympic Games contingency tickets will go on sale on Friday, confirmed by the London Organizing Committee of the Olympic Games and Paralympic Games (LOCOG).

About 20,000 people, who were unsuccessful in the initial Olympic ballot application and then again failed in the second round of sales, will be given priority to have access to the tickets 31 hours earlier than the rest of the eligible applicants, starting from 11 am on May 11 to 6 pm on 12 May.

These tickets, to be sold on a first come, first served basis, will then be offered to the one million people who applied in the initial ballot but were unsuccessful.

They will then have an exclusive five-day sales period. Any tickets unsold during this period will go back on general sale from 23 May at 11 am.

The tickets, available at www.tickets.london2012.com, include 5,000 to the Opening Ceremony, 6,000 to the Closing Ceremony, 50,000 to athletic events and so on.

Remaining tickets for the Paralympic Games will go on sale from 11 am on May 21, 100 days ahead of the opening ceremony of the Paralympics.