Two men charged with operating a mobile meth lab will return to court next Tuesday for a preliminary hearing.

Lloyd James Burrows, Columbus, Kan., and Billy Gene Darr, Webb City, Mo., are scheduled to appear in Ottawa County on multiple felony charges following an investigation by the Miami Police Department.

The two men were formally charged last week with two counts each of unlawful possession of a precursor with intent to manufacture, possession of a controlled dangerous substance within 1,000 feet of school or park and possession of a firearm during the commission of a felony.

On Jan. 10, Officer David Wright responded to a complaint that “two men were parked in a van, smoking a crack pipe” in the parking lot of a local retailer.

Upon arrival, Wright observed several boxes of pseudoephedrine, more than 1,000 boxes of matches with the striker plates missing and obtained consent to search the vehicle.

Detective Jeff Frazier was on duty at the time of the incident and was called to the scene to investigate the scene.

Upon investigation, authorities discovered the vehicle was being used as a mobile meth lab.

In addition to the above items, authorities found containers of fuel line antifreeze - used to remove the phosphorus from match books.

“They actually had several match book strikers in a container soaking them at the time of the investigation,” said Detective Todd Hicks.

Both men are being held in Ottawa County on a $200,000 bond.