Anchorage, Alaska (KINY) Dr. Morrie Craig resigned after serving 25 years as the canine drug testing director.
Musher Wade Marrs accused Dr. Craig of threats just before this year's race. Marrs said Craig threatened to reveal him as another musher whose dogs tested positive for a banned substance.
After the 2017 race, officials announced Dallas Seavey's dogs tested positive for banned substances like opioids and tramadol. Seavey denied the allegation and sat out the race this year.