PHOENIX -- After nearly a month-long investigation, Arizona Department of Public Safety officials announced the seizure of a fake UPS truck packed with marijuana, local television station KPHO reported.

Detectives seized the 2,118 pounds of marijuana, which has an estimated street value of nearly $1.2 million, from the truck Nov. 14 after a DPS officer and his drug-sniffing dog stopped the truck on the highway.

When the truck stopped, the driver fled into the desert, DPS said.

Officers discovered the bundles of marijuana, which were attached to makeshift burlap straps so drug carriers could use them as backpacks, in the back of the truck, DPS said.

The truck was painted a shade of brown similar to the color UPS uses, DPS said. There were also reflective UPS decals affixed to the truck.

The Arizona license plate was homemade, but the plate number was one actually assigned to UPS, DPS said. Additionally, the number on the "cloned" vehicle was also assigned to a real UPS truck in Tucson.