FILE - In this Wednesday July 9, 2014 file photo, International Olympic Committee (IOC) President Thomas Bach speaks during a press conference after an executive board meeting at the IOC headquarters in Lausanne, Switzerland.   U.S. based media giant Discovery Communications Inc. has secured the European broadcast rights for four Olympics through 2024 in a landmark deal worth euro1.3 billion ($1.45 billion). The parent company of the Discovery Channel and Eurosport won the rights to the games of 2018, 2020, 2022 and 2024, and also agreed to collaborate with the IOC on its new year-round Olympic Channel. The IOC says the deal covers all platforms, including free television, subscription and pay TV, internet and mobile phones in 50 countries across the continent. (AP Photo/Keystone, Jean-Christophe Bott, File)

31 athletes, who competed at the 2008 Olympic Games, have tested positive for doping after samples were retested, the International Olympic Committee (IOC) announced Tuesday.

The International Olympic Committee (IOC) retested 454 selected doping samples from the Olympic Games Beijing 2008.

“Proceedings against athletes who have infringed anti-doping rules will begin immediately and all will be banned from the Rio Games,” said an IOC statement.

“The fight to protect the clean athletes does not stop there, with 250 more results from retesting of samples from the Olympic Games London 2012 to come shortly,” IOA president Thomas Bach said.

“The aim is to stop any drugs cheats coming to the Olympic Games in Rio de Janeiro,” Bach added.