Virginia child sexual assault convict killed by inmate in prison

A Virginia businessman serving a 26-year sentence for sex crimes involving children was allegedly killed by another inmate in a Lawrenceville prison.

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The 63-year-old man – who the Virginia Pilot says has been identified as Mark Grethen – was found dead in his cell Tuesday night.

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The man suspected of killing him is serving a 22-year sentence for crimes including robbery, malicious wounding and assault by an inmate of probationer on an employee.

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Grethen was convicted in 2001.