BOSTON (AP) – An 80-year-old man has pleaded guilty to running a massive marijuana-dealing and money-laundering operation. The suspect was pulled over for speeding in Kansas. Marshall Dion is scheduled to be sentenced on Feb. 11 after pleading guilty Thursday under an agreement with prosecutors. He faces up to seven years in prison.

Police pulled Dion over for speeding in Junction City, Kansas, in 2013 and searched his pickup truck, finding nearly $850,000.

Investigators later found $2 million in a bank account, $880,000 in an Arizona building and nearly 400 pounds of marijuana and $11 million at a storage facility in North Reading, Massachusetts.

Prosecutors said Dion sold about 6,600 to 22,000 pounds of marijuana dating back to 1992.

Dion maintains police searched his truck unconstitutionally and is appealing. His lawyer says he is embracing his responsibility.