Gwinnett County, GA – Authorities have arrested 21-year-old Tyreun Whitaker in connection with a fatal double shooting that left 26-year-old Kevnna Robinson dead and another man injured in Gwinnett County over the weekend. According to the Gwinnett County Police Department (GCPD), officers responded to multiple reports of gunfire around 10 a.m. on Saturday, February 10,…