(Eugene, OR) -- The Department of Justice says last month's massive methamphetamine bust in Lane County turned up 384 pounds of the drug. The U.S. Attorney for Oregon issued a press release yesterday saying the operation on September 15th was the largest methamphetamine bust ever recorded in Oregon. The drugs seized were valued at over a million dollars. Authorities say the investigation started a year ago when the DEA and Eugene Police started investigating Gustavo Manzo-Mares. That led them to Martin Manzo-Negrete of Eugene, the leader of the drug ring. Police say the suspects would bring drugs into the state by car and the distribute them throughout Lane County. Police arrested Manzo-Negrete, Manzo-Mares and three other associates.