FOX News reports that a California man has been arrested for murder this week after a skeleton was uncovered in his former backyard. In 2015, the man’s housemate was murdered, and his remains were found in December while construction crews were digging up the backyard of the home the two had shared.

Michael Christopher Sager, 22, was arrested after the remains were found in a shallow grave behind the home on December 26, located 12 miles northeast of Sacramento. The current homeowner was reportedly “shocked” about the discovery, says FOX. No one was living in the home when the bones were discovered.

The name of the victim has not been released by authorities, but they believe that Sager stabbed him to death after getting into an oral argument with him in the summer of 2015. After burying his body in the backyard, Sager moved out of the home. No missing person report was ever filed for the victim.

There were reportedly heaps of trash in the backyard that were being cleared by construction crews, and the homeowner’s cat began scratching at the shallow grave after the trash was removed from above it. Authorities were called when bones were discovered in the area, one of which appeared to be a femur.

The homeowner has rented the home out for the last 10 years, and was cleaning up the property after evicting his last tenants for failure to pay.

Investigators spent two days cleaning and removing bones from the yard, and eventually recovered a near-complete skeleton.

Sager is currently being held without bail, and no attorney has been listed.

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