Skeletal remains found in a dilapidated shed off North State Street have been identified by Concord Police as those of Michael Schilz, 59, of Concord.

Concord Police responded to the property at 282-284 North State Street, directly across from the State Prison, after its owner reported finding a body inside a shed on April 21, according to Concord Police.

The skeletal condition of the body indicated that it had been there for “an extended period of time,” possibly as long as years, said Lt. Thomas Yerkes.

The cause of death remains unknown, but no related charges are expected at this time, Yerkes said.

The state sex offender registry lists Schilz, who was convicted in 2005 of aggravated felonious sexual assault on a minor, as living unhoused in Concord.

Schilz was released in December of 2021 and had been wanted on parole violations stemming from his original conviction since May 23, 2022, according to a state Department of Corrections spokesperson. He had never been reported as a missing person to Concord Police, Deputy Chief Barrett Moulton said.

In 2005, the property was the site of an arson that killed Robert McMillan, who owned and lived in a duplex there at the time. After the case had gone cold, Richard Ellison was arrested in 2018, and in 2022, he was convicted of second-degree murder for McMillan’s death.

Other than the shed, the property has been largely empty since. It was purchased in early April by Benjamin Carbone of Hooksett, according to city property records. The previous owners listed are Pennsylvania residents.

Catherine McLaughlin can be reached at cmclaughlin@cmonitor.com. You can subscribe to her Concord newsletter The City Beat at concordmonitor.com.