Spanish world steeplechase champion Marta Dominguez speaks to the media after giving evidence December 22, 2010 in a Madrid court after she was implicated this month in an anti-doping probe. Spain has been shocked by the news that Dominguez had her house searched on December 9, 2010 and was questioned by the Civil Guard under suspicion of trafficking and distributing banned substances.  [Photo/Agencies]

MADRID - World steeplechase champion Marta Dominguez, a suspect in an anti-doping probe in Spain, denied taking or supplying banned substances during a lengthy television interview on Tuesday.

Dominguez, one of Spain's best-known athletes, was one of 14 people taken in for questioning by Spain's Civil Guard last month, suspected of involvement in the trafficking of drugs and crimes against public health.

She gave straight 'no' replies when asked if she had taken drugs herself or been offered them during the interview in front of an audience on Spanish television station VEO7.

The 'Operation Greyhound' probe has linked her with supplying rather than taking but again Dominguez denied any wrongdoing.

"Yes, I have given some medications to colleagues, but I don't know if they would help their performance," she said in a relaxed and confident manner.

"Aspirin, iron, vitamin C. If a colleague didn't have something and needed something, I would give it to them."

Dominguez responded to a steady stream of detailed questions which appeared to have been taken from the investigation referencing photos, tape-recordings of phone calls and her movements.

"The Civil Guard thought I was hiding something in every conversation. I don't know why," she said adding that she had yet to see any evidence that implicated her.

The raids on Dec. 9 saw sports doctors, pharmacists, trainers, coaches, representatives and figures from the world of athletics detained.

Up to 15 addresses in Madrid, Las Palmas, Alicante, Segovia and Palencia were raided and police said they found anabolic steroids, bags of blood, hormones, EPO and laboratory equipment used for carrying out blood transfusions.