A fourth arrest was made Thursday afternoon in the April 9 triple murders at Lookout Valley.
Detectives with the Hamilton County Sheriff’s Office Criminal Investigations Division took a juvenile in custody at 4:50 p.m.
He was charged with involvement after the fact with the three murders and one attempted murder on Kelly's Ferry Road, authorities said.
The juvenile was charged with one count of accessory after the fact and transported to the Hamilton County Juvenile Detention Center.
Derek Morse, 19, was charged soon after the murders, then a juvenile was charged. This week, 22-year-old Skyler Hudson Allen was arrested.
Those killed as they congregated near an RV were John Lang, 53; Caleb Boozer, 29, and Jon Morris, 24. Michael Callen, 16, was shot.
This investigation remains active and anyone having information concerning this case is encouraged to call 423-209-8940 or email the HCSO Criminal Investigations Division at firstname.lastname@example.org.