HOUGHTON – Three people arrested after an Upper Peninsula Substance Enforcement Team bust of an Atlantic Mine residence in April were arraigned in Houghton County Circuit Court Monday.

Michael Karppinen II, 31, of Atlantic Mine, stood mute on four counts. Kevin Willis, 50, of Mount Morris, Michigan; and Anthony Brown, 35, of Flint, pleaded not guilty to three counts.

They are charged with delivery/manufacture of less than 50 grams of a mixture containing heroin, a 20-year felony; delivery/manufacture of less than 50 grams of a mixture containing cocaine, a 20-year felony; and possession of less than 35 grams of a mixture containing heroin, a four-year felony. Karppinen is also charged with maintaining a drug house, a two-year high court misdemeanor.

Detectives seized 50 individual packets of heroin, 1.5 ounces of crack cocaine and more than $1,900 in cash. UPSET estimated the street value of the drugs at $8,000.

Karppinen, Willis and Brown are all being held on $500,000 bond. Their circuit court arraignments were set for approximately 45 days.