AN error has led to 10,000 too many tickets being sold for synchronised swimming sessions at this year’s Olympics.

Around 3,000 people have been contacted by London 2012 and are being offered tickets for alternative events, including athletics, after organisers admitted that human error led to 20,000, not 10,000 tickets being put on sale in the second round of sales.

A London 2012 spokesperson said: “As a result of finalising the seating configurations in our venues and reconciling the millions of Olympic and Paralympic ticket orders against the seating plans for around 1,000 sporting sessions, we have discovered an error in seats available in four synchronised swimming sessions.

“In December we contacted around 3,000 customers who had applied for tickets in the four sessions during the second round sales process.

“We are exchanging their synchronised swimming tickets for tickets in other sports that they originally applied for.”

The alternative tickets will come from the pot of one million for all events that are due to go on sale in May once the seating configuration has been finalised at all the venues.

People wanting to re-sell any unwanted tickets that they have, can start doing so on Friday.