Also, Cox said, a family member interviewed by authorities referenced a recent incident in which Robinson came to dinner prior to Sept. 10, “and in the conversation with another family member, Robinson mentioned Charlie Kirk was coming to UVU.”

“They talked about why they didn’t like him and the viewpoints that he had,” Cox said. “The family member also stated Kirk was full of hate and spreading hate.” What kind of gun did investigators recover?

In a wooded area behind Utah Valley University's Losee building, FBI forensics agents recovered what they called a "high-powered rifle" they believe the suspect used to kill political influencer Charlie Kirk.

The rifle was a Mauser 98 bolt action chambered in the popular Springfield .30-06 caliber, authorities announced Sept. 12.

Tom Chittum, a former ATF Associate Deputy Director had predicted the single shot fired at Kirk indicated a bolt action rifle was used.

“.30-06 is a common hunting caliber, and the reports indicate it was an imported, older model,” said Tom Chittum, former ATF Associate Deputy Director.

Chittum said the traditional hunting caliber is used for hunting deer and in this configuration usually comes in a magazine with five rounds. Bolt action rifles mean one pull of the trigger fires a round, then a shooter must manually chamber another round. That’s opposed to a semi-automatic rifle where the firearm uses a mechanism to chamber a subsequent round.

“This was a longer shot, that suggests a person has prepared and practiced, but you don’t necessarily need to be a police or military sniper to make that shot,” Chittum said. “With modern optics and some practice, it’s not an impossible shot." What was inscribed on the bullets?

Authorities said there were messages written on the fired casing and three unfired bullets found in the Mauser rifle allegedly used in the shooting.

The fired casing, according to Utah governor Spencer Cox, read, “Notices bulges OwO What’s This?” The phrase references an internet meme tied to animated videos and furry culture. OwO references an emoticon, and “what’s this?” denotes cuteness or curiosity. It’s frequently referenced by video game streamers. More: Charlie Kirk suspect's bullet casings engraved with taunting, anti-fascist messages

One of the unfired casings said, according to Cox: “Oh bella ciao, bella ciao, ciao, ciao.” The lyrics reference the anthem of the antifascist Italian resistance during World War II.

Cox said that another read, “Hey fascist! Catch!” The casing also had a series of arrows that pointed up, right, down, down, and down in reference to a cooperative shooter video game called Helldivers 2. The input is the code for an airstrike. It has morphed into a meme and is used to imply a devastating reaction to something that should be destroyed.

The third unfired casing, according to Cox, said, “If you’re reading this, you’re gay LMAO.”