Authorities say a Wisconsin man is accused of manufacturing thousands of counterfeit vaping cartridges a day with THC oil for almost two years.

Kenosha County prosecutors say the 20-year-old had 10 employees to make cartridges that were packaged to look professionally done. The Kenosha News reports authorities seized 188 pounds (85.28 kilograms) of marijuana, THC oil, and about $20,000.

Police arrested the man last week. Charges are pending and he's being held on a $500,000 cash bond. He's due in court Friday. The Associated Press is not naming the suspect because he hasn't been charged.

The arrest comes as health officials investigate 450 possible cases in 33 states where vaping was linked to a severe lung disease. Health officials have warned against buying counterfeit vaping cartridges. It's unknown if the Wisconsin operation has been linked to any illnesses.