All eight finalists in the men's 100m at the World Athletics Championships have passed anti-doping tests, the IAAF said on Wednesday.

The International Association of Athletics Federations (IAAF) "can confirm that it has received the results of anti-doping tests conducted during the men's 100m".

"All the test results are negative," it added.

"All the athletes involved in this final have also tested negative in all other tests carried out prior to the 100m final."

The 100m final on Sunday was won in a new world record of 9.58sec by Jamaican Usain Bolt.

The first doping case at the world championships came to light on Tuesday when Moroccan steeplechaser Jamel Chatbi was revealed as having tested positive for the banned stimulant clenbuterol.