FBI Director Kash Patel announced Sunday that his agency is pursuing multiple lines of inquiry into the September 10 assassination of conservative activist Charlie Kirk in Orem, Utah.

In a post on X, Patel said the FBI is “committed to ensuring the investigation into Charlie Kirk’s assassination is thorough and exhaustive.” He noted that agents are examining a wide range of evidence and potential leads.

“We are meticulously investigating theories and questions, including the location from where the shot was taken, the possibility of accomplices, the text message confession and related conversations, Discord chats, the angle of the shot and bullet impact, how the weapon was transported, hand gestures observed as potential ‘signals’ near Charlie at the time of his assassination, and visitors to the alleged shooter’s residence in the hours and days leading up to September 10, 2025,” Patel wrote.

Patel added that while investigators have confirmed certain details, others remain under review.

“Our primary focus is to complete this investigation and deliver justice,” he said.

“To protect the integrity of the investigation and subsequent prosecution, we cannot release every piece of information we have to the public right now.”

One theory Patel addressed involves a plane reported to have turned off its transponder after departing near Orem on the day of the assassination.

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He said investigators interviewed the pilot and consulted with the Federal Aviation Administration.

“After interviews with the pilot and consultation with the FAA, we determined the transponder was not turned off. Incomplete flight data in rural areas caused the apparent gap,” Patel explained.

Patel emphasized that the bureau is working to pursue every possible lead.

“The entire FBI mourns the loss of Charlie Kirk,” he said.

“We will not rest until justice is served, and our investigation into this assassination will continue until every question is answered.”

As the Director of the FBI, I am committed to ensuring the investigation into Charlie Kirk’s assassination is thorough and exhaustive, pursuing every lead to its conclusion.

The full weight of America’s law enforcement agencies are actively following the evidence that has…

— FBI Director Kash Patel (@FBIDirectorKash) September 21, 2025

The FBI director’s statement came the same day as a large memorial service for Kirk at State Farm Stadium in Glendale, Arizona.

The event drew tens of thousands of mourners, including President Donald Trump, Vice President J.D. Vance, and other members of the administration.

Vice President Vance, who spoke at the memorial, also posted a message on X.

“Last week, we brought my dear friend Charlie Kirk home one last time,” Vance wrote.

“May he eternally rest in peace, and may God watch over Erika and their beautiful children.”

Last week, we brought my dear friend Charlie Kirk home one last time.

Today, we return to Arizona to remember Charlie and honor his sacrifice. May he eternally rest in peace, and may God watch over Erika and their beautiful children. pic.twitter.com/uY4BGx3Bin

— JD Vance (@JDVance) September 21, 2025

Kirk, 31, was shot and killed while debating students on the campus of Utah Valley University.

His assassination has prompted federal and state investigations, with officials pledging to review all available evidence.

The alleged shooter, Tyler Robinson, 22, was arrested two days after the attack and has been charged with capital murder.

Prosecutors have said they will seek the death penalty.

The FBI has not announced a timeline for when its investigation will be completed but has said updates will be shared when information can be verified.

For now, Patel stressed that all angles are being pursued to ensure accountability in Kirk’s killing.