Police say the two teenagers are suspected of a 12-day crime spree across the South.
A seven-year-old girl was the lone survivor of a prop-plane crash Friday that killed her family. Eight out of 28 sole survivors since 1970 have been children.
According to court records, Bradley Stone, who prosecutors say killed his former wife and five family members, had been arrested twice for drunk driving and was taking medications as part of mental health treatment. During his testimony after his 2013 arrest, he claimed to be fully disabled by PTSD.