The 35-year-old, who is four months pregnant with her first child and lives in Palencia in northern Spain, arrived at the courthouse in Madrid  accompanied by her husband and a lawyer.

Dominguez, who won 3,000 metres steeplechase gold in Berlin in 2009 after taking silver in the 5,000m in 2003 and 2001, has denied the allegations against her.

Dominguez was one of 14 people detained by police on December 9 as part of the investigation into sports doping dubbed "Operation Galgo" - which means greyhound in Spanish.

She was allowed to go home the same evening.

Six of the 14 detained suspects were charged with public health offences and trafficking in illegal substances including Dominguez' coach Cezar Perez.

Dominguez herself has not been formally charged.

Among the people charged is Spanish doctor Eufemiano Fuentes who was implicated in another major invesitgation into doping, the 2006 "Operation Puerto" which mostly focused on cyclists.

Dominguez has been suspended as one of the four vice-presidents of Spain's athletics federation while the investigation is underway.

She has already said that she would not defend her world title in the 2011 event in the South Korean city of Daegu because of her pregnancy but had planned to return the following year to compete in the London Olympics.


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