Officers were called to a house in the 2200 block of East Market Street shortly after 2:30 p.m. by a woman who said she found something that looked like a possible meth lab.
Police reported finding an active one-pot lab in the garage, as well as coffee filters, drain cleaner, Coleman fuel, battery packs and foil under a tarp on the workbench.
Searching the house, officers seized cold packs and multiple 20-ounce pop bottles found in the basement, according to a statement issued by the Warsaw Police Department.
It said the Indiana State Police Clandestine lab team and Warsaw Police drug enforcement officers were called in to clean up the hazardous chemicals.
Kosciusko County sheriff's deputies arrested Ryan Dean Winter, 37, at a friend's house in Atwood on an outstanding warrant on a charge of impersonating a public servant.
Police said Winter acknowledged making meth and was also charged with dealing/manufacturing methamphetamine and possession of methamphetamine, both felonies.
The warrant for impersonating a public servant stems from an August incident in which Winter is accused of identifying himself as a deputy from the Kosciusko County Sheriff's Department.