The Roswell Police Department has made an arrest in the 1988 murder of 8-year old Joshua Harmon. James Michael Coates, 56, of Woodstock, was taken into custody July 21st and booked into the Fulton County Jail on multiple charges including Murder. Roswell detectives arrested Coates after DNA evidence collected from the crime scene linked him to the murder. On May 15th, 1988 Joshua was reported missing by his parents after not returning home for dinner. After extensive searches over the following