Lance Twiggs, the transgender live-in partner of Tyler Robinson, the suspect accused in the assassination of conservative political activist Charlie Kirk, has reportedly fled their shared Utah townhouse, neighbors confirmed to the New York Post.

Twiggs, 22, who has reportedly been cooperating with authorities, disappeared from the St. George townhouse, with mail reported to be piling up and a continued police presence in the community weeks after Robinson's arrest.

“It definitely is a shock it happened here. It’s a quiet neighborhood. You know your neighbor on your left or your right, but people are pretty isolated,” said Jesse Riley, who lives a few houses down. “I haven’t seen anyone come out. There are still all these notes on the door, so it looks like nobody has been in there.”

Washington County Sheriff Nate Brooksby had previously confirmed that Twiggs, who hasn't been charged in connection with Kirk's shooting, was in a "safe space very far away from St. George" and needed "to lay low for a long time" amid public backlash. A federal investigation into Robinson reportedly revealed that he has no link to left-wing groups, three sources with knowledge of the situation confirmed to NBC News.

“Thus far, there is no evidence connecting the suspect with any left-wing groups," one source said. “Every indication so far is that this was one guy who did one really bad thing because he found Kirk’s ideology personally offensive."

President Donald Trump and his administration have pledged to crack down on left-wing groups that they presumed to be linked to Robinson following Kirk's shooting. The president announced he planned to designate Antifa as a "major terrorist organization" in a post shared on his Truth Social account.

Last week, text messages sent by the Robinson to Twiggs, whom police described as "a biological male" transitioning to female and "involved in a romantic relationship" with the suspect, who he referred to as "my love," were revealed.

“Drop what you are doing, look under my keyboard,” Robinson wrote, according to court papers filed by Utah County Attorney Jeff Gray on September 16.

Twiggs found a note written by Robinson that allegedly stated, "I had the opportunity to take out Charlie Kirk and I'm going to take it."

Robinson's parents, who were reported to be conservative, began to suspect he was the shooter after a surveillance photo was shared publicly during the manhunt that preceded his arrest. The suspect claimed the murder weapon was a gift from his grandfather.

“My dad wants photos of the rifle,” Robinson wrote, according to charging document released on Tuesday. “He's calling me rn, not answering.”

Robinson also told Twiggs to "delete this exchange," which they didn't comply to and the thread became evidence used to charge Robinson with aggravated murder in connection to Kirk's death. The 22-year-old was also charged with felony discharge of a firearm, obstruction of justice, witness tampering and several other counts, while officials have publicly stated their intention to seek the death penalty.

Kirk was fatally shot in the neck during what was scheduled to be the first stop on his 'American Comeback Tour' on September 10. The suspected shooter, Tyler Robinson, was announced to have been in custody and publicly identified by police on September 12.

Kirk founded Turning Point USA, a conservative youth organization, at the age of 18 along with tea party activist William Montgomery in 2012. The political pundit gained notoriety debating liberal students, winning over conservative financiers.

Kirk enthusiastically supported President Trump during his 2016 presidential campaign and served as a personal aide to his son, Donald Trump Jr., during the campaign, while also gaining a regular presence on cable news.

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