UPDATE 5-Olympics-Spain to hunt down "shameless" drugs cheats

(releads, updates with Spanish officials' quotes)

By Karolos Grohmann

BEIJING, Aug 11 (Reuters) - Spain on Monday pledged to hunt down and even imprison doping offenders after Spanish cyclist Maria Isabel Moreno became the first competitor at the Beijing Olympics to fail a drugs test.

Moreno, better known as Maribel Moreno, was tested for drugs on the day she arrived in Beijing on July 31 and the results showed she had used the endurance-boosting EPO drug, the International Olympic Committee said.

"We are going to hunt down these shameless people who harm our athletes. We are going to clamp down totally and will take the toughest action," Spanish Sports Minister Jaime Lissavetzky told reporters.

Moreno was tested just hours after her arrival and returned to Spain the same evening, leaving Beijing in tears and citing an anxiety attack, Spanish team officials said.

"She was quite different after being tested," Eugenio Bermudez, Secretary General of the Spanish Cycling Federation, said. "She was crying all the time and she insisted she wanted to go home."

Moreno, 27, has been stripped of her Games accreditation and the matter has been referred to the International Cycling Union (UCI).

"WHO GAVE YOU DRUGS?"

Lissavetzky said an investigation would be launched to identify how Moreno, who was tested three times in less than two months and six times in the past six months, got hold of the drugs.

"I ask you Maribel, looking you in the eyes, 'who gave you the substance and where did you buy it?'" Lissavetzky said.

The IOC has said it expected between 30 and 40 positive drugs tests during the Aug. 8-24 Games and has boosted the number of Games-related drugs tests to more than 4,500.

The Spanish Olympic Committee (SOC) said it was stunned with the positive test after running hundreds of checks to ensure their athletes were clean.

"This is a stain on Spanish sport," SOC chief Alejandro Blanco said.

The last drugs test on Moreno was conducted on July 18, 13 days before she arrived in Beijing.

Moreno now faces a potential two-year ban and under a new IOC rule could also miss the 2012 London Olympics.

"The punishment as stipulated by the World Anti-Doping Agency is two years," Lissavetzky said. "Anyone involved will get the maximum punishment. We will find out who supplied the substances and, if necessary, jail them."

CYCLING HARD-HIT

A statement on the cyclist's official website posted on Aug. 9 (www.maribelmoreno.com) said she was in Spain recovering from "a strong anxiety attack suffered in the athletes' village".

Cycling has been among the hardest-hit by the spread of doping in professional sport in recent years, with Spanish cyclists embroiled in some of the biggest drugs cases.