FOND DU LAC, Wis. (CBS 58) -- A Fond du Lac man charged with felony stalking has been arrested on additional charges, according to the  Fond du Lac County Sheriff's Office. 

Detectives served a search warrant at the home of Benjamin Larson on Aug. 14 and located human skulls and bones and serial killer memorabilia unrelated to the stalking investigation, prompting a separate search warrant and the collection of several items. 

A forensic anthropologist determined many of the remains are likely ancient Native American in origin, however investigators are awaiting the results of several of the remains that require specialized forensic testing.

Larson posted $15,000 bond and was released from custody on Aug. 21.

The sheriff's office says he has since been taken into custody again on three counts of receiving stolen property and one count of felony bail jumping. 

The investigation remains ongoing. Larson is due in court in the stalking case Sept. 11.