BILLINGS – A Roundup man who was bringing large amounts of meth from Washington into Montana was sentenced Wednesday to 11 years and eight months in prison, followed by five years of supervised release.
William Thomas Duncan, 45, pleaded guilty in March 2026 to one count of possession with intent to distribute methamphetamine and one count of possession of a firearm in furtherance of a drug trafficking crime.
The government alleged in court documents that Duncan and a partner regularly traveled to Washington to pick up methamphetamine, bringing it back to Montana to sell.
The Montana Division of Criminal Investigation and the ATF conducted the investigation.
