PARIS (AFP) - Two athletes have been suspended after failing drugs tests at the world championships in Daegu this summer, the International Athletics Federation (IAAF) announced Friday. Portuguese steeplechaser Sara Moreira and South Korean sprinter Lim Hee-nam both failed tests for the banned stimulant methylhexaneamine, the IAAF said. With the findings confirmed by B sample analysis the pair have been provisionally suspended pending the outcome of disciplinary hearings, in accordance with IAAF regulations. Moreira placed 12th in the women's 3,000-metre steeplechase while Lim was in South Korea's 4x100m relay team which came in fifth in their heat. Methylhexaneamine is often used as a nasal decongestant and can also be found in food supplements. The IAAF carried out a widespread anti-doping programme during the championships using classic doping tests as well as ensuring that each of some 2,000 participating athletes underwent a blood test. The organisation said a total of 468 urine samples were collected as part of its standard testing programme - 41 samples out-of-competition and 427 samples in-competition in co-operation with the local organising commmittee and the Korean Anti-Doping Agency (KADA), with the samples analysed by the WADA-accredited laboratory in Seoul.