A Michigan man has been convicted of premeditated murder after his late wife’s breast milk helped prove that he laced her cereal with a lethal dose of heroin, officials said.

GENESEE COUNTY, Mich. - A Michigan man charged with murder after allegedly killing his wife by spiking her cereal with heroin is due in court. MORE: What a man accused of murdering wife by spiking cereal with heroin said in depositionJason Harris' preliminary examination is Tuesday. Harris, 44, is accused of putting heroin in Christy Ann Thompson Harris' cereal in 2014. What happenedGenesee County Prosecutor David Leyton said Christina Harris' husband, Jason Harris, had a history of seeing other women outside their marriage. The prosecutor said at one point Jason Harris hired a hit man.

Jason Harris was charged with premeditated murder and is facing life in prison. Genesee County Prosecutor David Leyton said Christina Harris' husband, Jason Harris, had a history of seeing other women outside their marriage. The prosecutor said at one point Jason Harris hired a hit man. "We believe Jason Harris murdered his wife, we believe he put heroin into her cereal and milk the night she died," Leyton said. Two years after Christina Harris' death was ruled an accidental overdose, a key piece of evidence was located at her parents house.