Positive drug tests have been taken from horses trained at the stables of top Canterbury harness racing trainer Robert Dunn.
The positive tests were taken from some stable runners at the Nelson two day meeting in June this year, which has been confirmed by the Racing Integrity Unit manager Mike Godber.
Godber said "the investigation was still ongoing and it would be another week or two before the RIU determined what further action would follow"
Robert Dunn is currently sitting second on the trainers premiership table with 87 wins from 663 starters this season.
Harnesslink Media