The man convicted of supplying the heroin that killed a Kewaunee County man has filed a notice of his intent to seek post-conviction relief.

Charles E. Carthage, 44, was sentenced in April to 12 years in prison, followed by six years on extended supervision. After a three-day trial in March, he was found guilty of being party to the crime of first-degree reckless homicide by delivering drugs, in connection with the January 2013 death of Andrew LeFevre, 34, of rural Casco.

LeFevre died of a heroin overdose and investigators traced the drug back to Carthage, who is currently serving a five-year prison sentence in an unrelated Brown County heroin trafficking case.

Judge Donald Zuidmulder, who presided at the trial, made the new sentence consecutive to the Brown County sentence, meaning it must be served in its entirety. The judge had the option of making the sentence concurrent, or served at the same time, as the existing term.

Zuidmulder also ordered Carthage to pay more than $12,000 in court costs, restitution and fees.