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María Guadalupe González Romero lost her Court of Arbitration for Sport (CAS) drug ban appeal and was further charged this time with submitting false evidence.

The 31-year-old Mexican race walker tested positive for trenbolone and was suspended in 2018 by the Athletics Integrity Unit (AIU).

The suspension started on November 16, 2018.

She claimed that the positive test result was due to consuming contaminated beef. She informed the AIU that in 2018, she ingested 200 grams of steak.

Trenbolone is not prohibited for use or consumption on animals destined for slaughter in Mexico. It is authorised for use in livestock feed lotting by the Department of Agriculture, Livestock, Rural Development and Food (“SAGARPA”).

On Tuesday, the AIU announced the second charge.

“AIU has now charged the athlete with a second violation for tampering as a result of her submitting forged documents and fabricated evidence, and procuring false witness testimony in the course of the proceedings before the Disciplinary Tribunal for the first violation.”

The AIU indicated that her violation was for the presence of Epitrenbolone and “Use of a Prohibited Substance/Method Trenbolone)”.

She won a silver medal at the 2016 Rio Olympic Games as well as in the 2017 London World Athletics Championships in the 20-kilometre race walk. Her personal best of the 20K distance is a national record 1:26:17.