Copperopolis, CA….On 11-13-15 at about 2235hrs, the Calaveras Sheriff’s Office responded to an assault with a knife in the 1000 Block of Iroquois Court, Copperopolis. The victim was transported to a local hospital for their injuries and 60 year old John Merritt was arrested for attempted murder. The sheriff’s office is currently investigating this incident. More information will be provided Monday.