MEMPHIS, Tenn. (AP) — Federal prosecutors say 12 members of an organization that trafficked methamphetamine from Tennessee to California have been sentenced to more than 83 years in prison combined.

The U.S. attorney’s office said Monday that 12 defendants have been sentenced to prison terms ranging from 18 months to 18 years. Prosecutors say they are from Arkansas, California and Tennessee.

Prosecutors say the ring used the U.S. Postal Service to ship meth from Memphis to California. Members of the organization also laundered money from the drug sales.

The defendants pleaded guilty to charges including conspiracy to possess with the intent to distribute meth, and money laundering. They were indicted in July 2015.