WASHINGTON \u2014 Charlie Kirk\u2019s alleged shooter Tyler Robinson was living with a transgender partner who was in the process of transitioning from a male to a female, a law enforcement source confirmed to The Post Saturday.<\/p>\n
That individual, who has yet to be identified by the authorities, is now fully cooperating with the FBI on its investigation into the fatal shooting of the conservative activist, the source added. The relationship was first\u00a0reported<\/a>\u00a0by Fox News\u2019 Brooke Singman.<\/p>\n Text messages and other communications\u00a0that the transgender individual traded with Robinson, 22<\/a>, helped the feds nab the accused assassin.<\/p>\n Mugshot of alleged assassin Tyler Robinson. via REUTERS<\/p>\n Federal and state authorities revealed during a Friday\u00a0news\u00a0conference that a roommate was cooperating with their investigation.<\/p>\n The roommate had shared communications from a contact named \u201cTyler\u201d on Discord that described bullet casings similar to those found at the scene and discussed the \u201cneed to retrieve a rifle from a drop point.<\/a>\u201c<\/p>\n Police vehicles seen at the apartment complex where Tyler Robinson lives. AFP via Getty Images<\/p>\n The messages provided evidence for authorities to seek an\u00a0aggravated murder charge<\/a>\u00a0against Robinson on Friday \u2014 the only one that carries the death penalty.<\/p>\n Robinson allegedly shot and killed conservative activist Charlie Kirk on Wednesday, Sept. 10, 2025, during Kirk\u2019s stop at Utah Valley University for his American Comeback Tour. Amber Jones Robinson \/ Facebook<\/p>\n Kirk, 31, was struck in the neck by a single bullet shortly after being posed a question on his \u201cAmerican Comeback\u201d college speaking tour about transgender mass shooters.<\/p>\n Stay up to date on the shooting of conservative activist Charlie Kirk<\/p>\n \u201cDo you know how many transgender Americans have been mass shooters over the last 10 years?\u201d asked attendee Hunter Kozak.<\/p>\n \u201cToo many,\u201d Kirk responded.<\/p>\n Robinson (pictured) struck Kirk in the neck by a single bullet shortly after being posed a question on his \u201cAmerican Comeback\u201d college speaking tour about transgender mass shooters. amber.j.robinson\/facebook<\/p>\n \u201cDo you know how many mass shooters there have been in America over the last 10 years?\u201d Kozak followed up.<\/p>\n \u201cCounting or not counting gang violence?\u201d the Turning Point USA founder sought to clarify.<\/p>\n UVU mathematics student Hunter Kozak (pictured), who debated Charlie Kirk seconds before the activist was assassinated, spoke out over the shooting on Friday. hunter \/X<\/p>\n Kirk was shot immediately after and transported to a hospital where he underwent surgery.\u00a0He was later pronounced dead.<\/p>\n \u201cPeople have obviously pointed out the irony that I was \u2014 that the point I\u2019m trying to make is how peaceful the left was right before he got shot,\u201d Kozak said in\u00a0a clip posted Thursday<\/a>\u00a0on social media. \u201cAnd that only makes sense if we stay peaceful.\u201d\u00a0<\/p>\n Kirk was shot immediately after answering a follow-up question from Kozak at the UVU event on Sept. 10, 2025. via REUTERS<\/p>\n Though he grew up in a largely conservative Mormon family, Robinson was not registered with either major political party and appeared to have become infatuated by the far left in recent years, according to the authorities.<\/p>\n Robinson grew up in a largely conservative Mormon family, though he was not registered with either major political party. Facebook \/ Amber Jones Robinson<\/p>\n \u201cIt\u2019s very clear to us and to the investigators that this was a person who was deeply indoctrinated with leftist ideology,\u201d Utah Gov. Spencer Cox told The Wall Street Journal in a brief interview published Friday.<\/p>\n Cox also revealed that a recent family dinner had showcased Robinson\u2019s newfound beliefs, as he and a relative got into it over Kirk\u2019s viewpoints and how each \u201cdidn\u2019t like\u201d the 31-year-old conservative activist.<\/p>\n Supporters and fans left flowers at the vigil site for Charlie Kirk following the shooting at UVU. Bob Strong\/UPI\/Shutterstock<\/p>\n