An autopsy was set Tuesday on the death of 61-year-old Ronald Duff, of Harrison Township.
Township police Chief Mike Klein says there was "evidence of trauma" on the body, including cuts, bruises and scratches. Police stopped short of naming a suspect and no charges have been filed in the death.
Duff and his brothers, who were also mentally disabled, were known in some Allegheny River valley communities northeast of Pittsburgh for riding around on bicycles collecting scrap metal. Harrison Township is about 25 miles northeast of Pittsburgh.