Jamaican discus thrower Allison Randall banned for two years

Jamaican discus thrower Allison Randall has been suspended for two years after testing positive for a banned substance.

The 26-year-old failed a drugs test during her country's national championships in June 2013.

However, Jamaica's Anti-Doping Commission admitted that it could not establish how the substance came to be in her body.

Randall represented Jamaica at the 2012 London Olympics.