The U.S. attorney's office says a 54-year-old California man has pleaded guilty to supplying marijuana to a Montana medical marijuana provider.

Adam Paul Cleff of Potter Valley, Calif., pleaded guilty to distribution of marijuana Tuesday before U.S. District Judge Donald Molloy in Missoula. Sentencing is set for Nov. 10.

Prosecutors say a confidential informant told them a medical marijuana caregiver in Bozeman was conspiring with people in California to transport marijuana to Montana.

An investigation of Cleff and the dispensary owner found evidence that Cleff distributed about 85 pounds of marijuana to the dispensary owner. Witnesses said the amount distributed could be up to 342 pounds from the spring of 2009 to the fall of 2010.

The offer of proof does not name the dispensary owner.

Associated Press