FBI reveal disturbing note and DNA evidence from alleged Charlie Kirk assassin in breakthrough discovery

The FBI has detailed a disturbing note and DNA evidence from the alleged Charlie Kirk assassin.

Tyler Robinson said he was going to 'take out' Kirk, according to FBI Director Kash Patel.

"The note was written before the shooting, it was in the suspect's home," Patel told Fox News.

"We have since learned the note - even though it was destroyed - we have found forensic evidence of the note and we have confirmed what the note said because our aggressive interview posture at the FBI."

The note read: "I have the opportunity to take out Charlie Kirk and I'm going to take it."

The FBI director has also confirmed DNA matching Robinson was found on a towel covering the murder weapon when it was discarded.

Robinson remains in custody (FBI)

More DNA was found on the bolt-action hunting rifle which authorities believe was used in the shooting, though further investigation is needed to establish any links to Robinson.

Patel did however confirm to Fox that a screwdriver was discovered in the sniper's nest on a roof.

"I can report today that the DNA hits from the towel that was wrapped around the firearm and the DNA from the screwdriver are positively processed for the suspect in custody," Patel told Fox.

Kirk was killed while speaking at an event organized by his company, Turning Point USA, on Wednesday (September 10) at Utah Valley University.

Authorities appealed for help in identifying the shooter after a suspect was seen on a rooftop of a building on the college campus.

The FBI confirmed on Friday (September 12) they had detained a suspect identified as 22-year-old Robinson.

Many of Kirk's nearest and dearest have spoken out over the weekend, including his wife, Erica.

Charlie Kirk was assassinated last week (Chip Somodevilla/Getty Images)

Erika vowed to keep her husband's work going by continuing his campus tour, 'The American Come Back Tour', which he'd started at UVUV, radio show, and his podcast.

"Our campus tour this fall will continue,” she said. “There will be even more tours in the years to come."

Erica also addressed her husband directly, saying she would 'never let your legacy die'.

"In a world filled with chaos, doubt and uncertainty, my husband’s voice will remain and it will ring out louder and more clearly than ever and his wisdom will endure." she added.

If you or someone you know has been affected by gun violence, please find more information and support via Survivors Empowered on their website.

More to follow.