The DEA on Thursday announced “Operation Log Jam,” a massive nationwide sweep in which 90 people were arrested, and more than 19 million packets of designer synthetic drugs were seized.

Officials now confirm Wednesday’s raids in St Joe and Andrew County were part of that larger operation.

A spokesman for the US Attorney’s Office for Western Missouri says there have still been no arrests and no charges in yesterday’s operations, and said the federal agents involved joined a nearly year-long probe by the Buchanan County Drug Strike Force.

The U.S. Drug Enforcement Administration on Thursday announced what it called the first nationwide law enforcement action against the synthetic designer drug industry. Agents seized more than $36 million in cash yesterday. Agents seized so-called bath salts, as well as the synthetic drugs K2 and Spice. They also confiscated large amounts of the constituent products used to make the drugs.

Operation Log Jam was conducted jointly by the U.S. Drug Enforcement Administration and U.S. Immigration and Customs Enforcement (ICE), with assistance from the Internal Revenue Service Criminal Investigations, U.S. Postal Inspection Service, U.S. Customs and Border Protection, FBI, Food and Drug Administration’s Office of Criminal Investigations, as well as countless state and local law enforcement members in more than 109 U.S. cities and targeted every level of the synthetic designer drug industry, including retailers, wholesalers, and manufacturers.

Find out more at the DEA’s web site, here.