A body found on Highway 54 southwest of Red Deer was a victim of foul play, Alberta RCMP said Monday.

An autopsy in Calgary found the death of Sheldon Mark Hiller, 46, of Red Deer was criminal in nature, but the cause of death is being withheld as an investigation continues, said police.

A passerby called police Thursday morning after he noticed what looked like human remains in a ditch near Raven, about 70 kilometres southwest of Red Deer.