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CLAY COUNTY, Iowa  —  A South Dakota woman was found dead in a camper in northwest Iowa this weekend, and police are calling her death suspicious.

The Clay County Sheriff’s Office was called to an address near Everly on a report of an unresponsive woman. Upon arrival, they found 30-year-old Casey Eleeson of Huron, South Dakota, dead.

Authorities arrested 43-year-old Robert Ryker at the scene after they found meth and marijuana in his possession. He has not been charged in Eleeson’s death, and the investigation is ongoing.