Selsouli sent home after failed test
Moroccan gold medal track prospect Mariem Alaoui Selsouli has been thrown out of the Olympic Games after failing a drugs test for the second time in her career.
Athletics' ruling body, the IAAF, said Selsouli had tested positive for the banned diuretic furosemide in Paris earlier this month.
She has been served with a provisional suspension but could be banned for life.
The 28-year-old had been one of the leading contenders for the women's 1,500 metres title, having posted a time of three minutes 56.15 seconds, the fastest in the world this year, at the Paris meeting on July 6.
Selsouli waived the right to have her B sample analysed but still has the right to a hearing.
She served a two-year suspension from 2009-11 for a doping offence, when she was found to have used EPO. A second such offence would lead to a lifetime ban.
The IAAF said: "IAAF is now in a position to officially confirm that the prohibited substance furosemide (a diuretic) was found in Mrs Alaoui Selsouli's sample collected at the Meeting Areva in Paris on 6 July, 2012.
"Alaoui Selsouli has waived her right to the B analysis, and as a result has now been provisionally suspended from all competition in athletics.
"In accordance with IAAF rules, she still has the right to request a hearing which needs to be held by the Moroccan Athletic Federation within the next three months. Until such time, the IAAF will make no further comment on this case."
Selsouli's Paris run was the quickest posted by a woman since 2006.