BOSTON (AP) — An 80-year-old man who ran a sprawling marijuana-dealing operation has been sentenced in Boston to 10 years in prison.

Marshall Dion pleaded guilty last year to drug and money-laundering charges.

Prosecutors say Dion ran a large marijuana enterprise for decades.

When police in Junction City, Kansas, stopped him for speeding in 2013, they found about $828,000 in cash in his pickup. A federal investigation led authorities to Massachusetts and Arizona, where they found about $15 million in cash, nearly 400 pounds of marijuana and ledgers detailing drug deals going back to 1992.

A federal judge this month rejected a plea agreement that called for a five- to seven-year prison sentence for Dion.

The judge sentenced him Tuesday to 10 years in prison during a hearing in U.S. District Court.

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