CASSOPOLIS — Duane Glassco did not leave Cass County Circuit Court a happy customer Friday.

Shortly after being sentenced to a minimum of six years in prison on meth-related charges by Judge Michael Dodge, the 48-year-old yelled out an expletive as he was being led out of the courtroom.

Glassco told the court he didn’t believe prison was the right fit for him. He said he originally learned how to use and make meth while serving time in the Michigan Department of Corrections for a criminal sexual conduct conviction years ago.

“The only thing prison had done for me is taught me how to be a better criminal, a worse criminal and a worse person in society,” Glassco said. “Prison isn’t going to help me.”

Prosecutor Victor Fitz told the court Glassco is an enemy of the public who has been involved in drugs since age 14.

“This individual has moved into the meth morass and has done so in a big way. He is a danger to himself and the community around him,” Fitz said.

Police acting on a tip discovered Glassco making meth at a residence on Disbrow Street in Cassopolis on May 12. Glassco fled to the roof and attempted to dispose of a one-pot meth lab, while police were attempting to enter.

Glassco told the court Friday he was trying to dispose the evidence so it wouldn’t harm the police.

“I was just trying to protect the officers,” he said.

Glassco receives no credit for time served.