A Russian cyclist and a Colombian sprinter have become the latest athletes to test positive to banned substances at the London Olympics.

The International Olympic Committee announced that Victoria Baranova, who was due to compete today (Sunday, 11:00 GMT) in the women’s sprint, tested positive for testosterone.

The substance was detected in a urine sample provided three days before the Olympic opening ceremony.
The 22-year-old has now been excluded from competition and will be sent home.