The fourth teenager in a fatal June 30 car crash in Stephens County died Friday, according to authorities. Kainan Terrell Green, 17, succumbed to his injuries suffered in the crash, according to Georgia State Patrol. Tristin Elizabeth Helton, 18, Kennedy Ruthann Wright, 16, and Macklen-Jace Elijah Alexander, 17, were killed in the crash around 12:15 a.m. June 30 on Brookhaven Circle in Stephens County.