Goodhue County Sheriff's Office was part of a multi-agency investigation that led to the seizure of more than 55 pounds of methamphetamine.

Federal charges were announced this week for two Rochester residents related to possession and distribution of the illegal drug, according to a U.S. Attorney's Office news release.

The charges and the bust were a part of a monthslong effort. The U.S. Drug Enforcement Agency, the Olmsted County and Goodhue County sheriff's offices and the Southeast Minnesota Violent Crime Enforcement Team all assisted throughout the course of the investigation.

Olmsted County Sheriff's Office called it the region's largest meth bust.

Steven Allen Lindquist, 30, and Tiffany Marie Gauthier, 24, were in U.S. District Court on Monday facing multiple charges.

A rented truck that law enforcement seized from the driveway of Gauthier's Southwest Rochester residence in May was allegedly found to have 50 packages of meth hidden in it, according to Olmsted County Sheriff's Office Capt. Vince Scheckel. The estimated street value of the drugs is more than $300,000.

According to the indictment, from November 2018 through May 29 of this year, Lindquist and Gauthier worked together and with others to distribute more than 500 grams of methamphetamine. Lindquist also is accused of possessing hydrocodone, oxycodone, alprazolam, clonazepam, MDMA, and marijuana, which are all controlled substances under federal law.

Gauthier is charged with conspiracy to distribute methamphetamine and possession with intent to distribute methamphetamine.

Lindquist is charged with conspiracy to distribute methamphetamine, possession with intent to distribute a controlled substance and two counts of possession with intent to distribute methamphetamine.

Both Lindquist and Gauthier were arraigned on their charges in U.S. District Court on Monday. Both pleaded not guilty, according to court records. Jury trials for both are scheduled for the end of September.

Lindquist was arrested in April in Red Wing. Police allegedly found $17,290 in cash in the SUV he was driving, which had Wisconsin plates. A drug case in Carlton County was dismissed Wednesday by a motion from the Carlton County Attorney's Office as Lindquist is under federal indictment, according to the dismissal.

In the federal case, Lindquist will remain in detention pending trial and Gauthier was released on conditions of bond.