45 more cases of doping, says IOC

The IOC also disclosed that 23 of the 30 positive tests taken from the Beijing samples were medallists while 15 positive tests from the London Games were from nine countries and two sports.

The IOC said the second wave of retests produced 30 positive cases from Beijing and 15 from London.

Turkish weightlifter Sibel Özkan has been disqualified retroactively from the Beijing 2008 Olympics and ordered to return the silver medal she won at the Games after re-analysis of her samples revealed banned substance stanozolol.

"The protection of the clean athletes and the fight against doping is a top priority for the International Olympic Committee", it said.

An independent commission report earlier this week alleged state-sponsored doping by Russian Federation centred around the 2014 Sochi Winter Olympics.

The IOC has said the retesting programme followed "intelligence-gathering" that began a year ago.

The 30 new positive cases from Beijing involved athletes from four sports and eight countries. Numerous countries and sports have been implicated.

Bach and the IOC's executive board will meet Sunday to discuss the CAS ruling and decide what sanctions to impose on the remainder of the Russian Olympic association and its athletes.

This is the second round of reanalysis, and several more are expected before and after the 2016 Olympics in Rio.

The International Olympic Committee already has a shortlist under consideration to be added to the program for the 2020 Tokyo Games.

After the first two waves of testing, 1,243 doping samples from the Games have now been reanalysed, resulting in 98 positive tests.

It said the third and fourth waves of tests will continue throughout and after the Olympics, which run from August 5-21.

The news comes one day after the worldwide Court of Arbitration for Sport rejected an appeal from more than 60 track and field athletes from Russia who were seeking to compete despite their national sporting federation's recent suspension.

They have faced calls to make the decision by the World Anti-Doping Agency and 14 National Anti-Doping Organisations.

  • Rosalie Stanley