A narcotics detection dog working with the Lincoln County Sheriff’s Office helped uncover more than 700 pounds of suspected methamphetamine and fentanyl during a routine speeding stop in rural Nevada on Tuesday, October 13.

A deputy pulled over a pickup truck on U.S. Highway 93 near Ash Springs after seeing it go over the posted speed limit, according to the U.S. Attorney’s Office for the District of Nevada.

During the stop, the trained K9 alerted to suspected controlled substances inside the vehicle.

A second deputy had arrived at the scene, and the dog made its alert while the first deputy was still writing the speeding citation, local reports say.

Officers then searched the truck and found 13 large storage totes packed with vacuum-sealed packages.

Inside were about 187 packages of a white crystalline substance weighing roughly 307 kilograms, which field tested positive for methamphetamine.

Officers also found 13 brick-shaped packages weighing about 14 kilograms, which field tested positive for fentanyl.

That works out to more than 677 pounds of suspected methamphetamine and about 30 pounds of suspected fentanyl.

Sheriff Derek Foremaster put the estimated street value at about $2.3 million and called it the largest drug seizure in the county’s history, according to local reports.

The driver, Francisco Joel Garcia Farias, 26, was arrested and now faces federal charges.

A federal criminal complaint accuses him of two counts of possession with intent to distribute, one involving fentanyl and one involving methamphetamine.

Each count carries a mandatory minimum of 10 years in prison and a maximum of life, followed by five years of supervised release, if he is convicted.

Federal prosecutors noted that a criminal complaint is only an allegation. Garcia Farias is presumed innocent unless proven guilty in court.

Homeland Security Investigations is leading the case with the Lincoln County Sheriff’s Office.

Officials have not released the dog’s name, breed, or handler.

The sheriff told reporters that a donation from a local business helped make the department’s K9 program possible.

The driver was reportedly heading north from Las Vegas toward Idaho when he was stopped.

Other working dogs have made news in Southern Nevada this fall.

At the Las Vegas Convention Center, two new bomb-sniffing Labradors named Olaf and Mufasa recently joined the K9 unit.

The Las Vegas Detention Center has also welcomed Rudy, Southern Nevada’s only jail K9.

Dog owners have also had a chance to watch working dogs up close this season, including when working K9s took over Tuscany for free classes and public events.

The case is being prosecuted in federal court, and the federal release did not list a court date.