Smoken Up's Interdominion's title is in serious doubt, after a B sample also tested positive for a banned substance.
The Australian pacer won last month's prestigious Group One harness race at Alexandra Park, but returned a positive sample to a drug test.
The second sample has now been examined and
Racing: Interdominion winner fails drug test
Interdominion winner Smoken Up (No 10). Photo / Natalie Slade
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