Man found dead outside Shopko died of natural causes

GRAFTON -- Grafton police say a 59-year-old man found dead outside the Shopko store on Wisconsin Avenue Tuesday afternoon died of natural causes.

The Ozaukee County Coroner performed an autopsy on Russell Roberts' body Wednesday, and determined he died of natural causes.

The man's body was located on the north side of the building, and he was determined to be unresponsive.

Police set up a crime-scene perimeter, but said their initial investigation did not suggest any foul play.

Officials say Roberts had history of health problems.