Growing up in a Utah suburb, Tyler Robinson seemed to be on a promising path: he had a close-knit family, scored well on standardized tests, and earned a 4.0 GPA, according to social media posts.

US officials have confirmed the suspect in the killing of Charlie Kirk has been arrested and identified as 22-year-old Tyler Robinson.

Cox said a family member of Robinson told authorities that Robinson “had become more political in recent years.”