The four people found shot to death in a car in the former Renegade Mountain resort in Cumberland County included one woman and three teenage boys.
Law enforcement on Friday identified the victims as 22-year-old Danielle Jacobson, 16-year-old John Lajeunesse and two 17 year olds, Steven Presley and Dominic Davis.
Investigators said a person of interest in the case was located in Rhea County overnight and taken into custody on an unrelated charge.
The car containing the bodies was discovered by a resident of the community about 50 miles west of Knoxville on Thursday morning.
The former resort had had controlled access with a gate until 2010, when new owners got rid of it. That move gave rise among some residents about security in the 3,000-acre community.
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