A 30-year-old man in Michigan may spend the rest of his life behind bars after the girlfriend he allegedly abused and tortured for weeks died, suffering more than 50 individualized injuries and spending months on life support.

New details in the case were revealed Monday during the preliminary hearing of Jonathan M. Zieroff, after he was formally charged with murder in the 2024 death of Kelley K. LaLonde, court records show.

Prior to the victim's death, Zieroff had been facing one count of felony assault with intent to murder over the dayslong attack on LaLonde that left her bleeding from her brain, among other injuries.

As Law&Crime previously reported , the underlying case began after LaLonde's mother reported her missing because she had not answered her phone or shown up for work for

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