Cleveland man, heroin dealer sentenced to four years in prison for customer's death

CLEVELAND - A Cleveland man and heroin dealer was sentenced to four years in prison Monday for the death of a customer from October 2013. 

Michael Karkoska, 24, is guilty on one count of  involuntary manslaughter for the death of Lanny Guillon III. 

Karkoska sold the heroin that killed 19-year-old Guillon. 

Guillon was found dead Oct. 10, 2013 one block from the Circle K store at W. 140th Street and Triskett Road, where the sale took place.

Karkoska entered a plea of guilty Monday morning to one count each of involuntary manslaughter, corrupting another with drugs, trafficking, drug possession and possessing criminal tools.

“For the first time in memory, a drug dealer in Cuyahoga County has been held responsible for the death of his customer – and it will not be the last,” said Assistant County Prosecutor Mahmoud Awadallah, who prosecuted this case for the State of Ohio. “Today, Michael Karkoska learned that you are responsible for your actions.”

Three other defendants involved in the deadly sale also entered guilty pleas and were sentenced in January. 

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