BLAINE, Wash. -- Border Patrol Agents seized 12 duffel bags containing 577 pounds of "BC bud" marijuana on Monday near Maple Falls, Wash., according to a press release from U.S. Customs and Border Protection.

A 24-year-old Canadian woman was arrested in connection with the seizure and is facing a federal charge.

According to the documents, Immigration and Customs Enforcement agents had been tailing Brandine Phillips for days, and watched her drive from the Nooksack River Casino up a remote, one-lane, dead-end road toward the Canadian border.

The ICE agents began following her again at a distance after she drove back down the road, and that's when the border patrol unit intervened and pulled her over.

During the immigration inspection and search of the truck, the 12 black hockey bags filled with pot were found in the truck bed.

"BC bud" is a type of potent marijuana grown in British Columbia.

Phillips made her initial appearance in U.S. District Court in Seattle on Wednesday on one count of possession with intent to distribute. Her lawyer declined to comment.