JUST IN: Tyler Robinson's mother expressed concern that her son had become left-leaning, pro-gay, and pro-trans in the last year.
Utah County DA Jeff Gray also confirmed the etched inscriptions on the bullet casings.
"Robinson's mother expressed concern to her husband that the suspect shooter looked like Robinson. Robinson's father agreed."
"Robinson's mother explained that over the last year or so, Robinson had become more political and had started to lean more to the left, becoming more pro gay and trans rights oriented."
"She stated that Robinson began to date his roommate, a biological male who was transitioning genders."