The gunman who tried to assassinate Donald Trump spent months researching him, along with other targets like Joe Biden, before deciding to shoot the Republican presidential candidate, the FBI has said.
The bureau said Thomas Crooks, 20, was involved in a “sustained detailed effort to plan an attack” before eventually becoming “hyper focused” on Mr Trump’s rally in Pennsylvania.
But Kevin Rojek, the special agent in charge of the FBI’s Pittsburgh field office, has also admitted experts have not yet been able to determine what motivated him.
Crooks’ computer activity showed he was interested in a mix of ideologies, but did not show a definitive motivation from a particular left-leaning or right-leaning point of view.
Mr Trump was struck in the ear when Crooks, who was positioned on the roof of a nearby building, fired eight shots before being killed by a Secret Service counter sniper.
Image: Two improvised explosive devices were discovered in Thomas Crooks’ car. Pic: FBI
Image: The rifle used in the assassination attempt could be disassembled and hidden in this backpack, also recovered from the scene. Pic: FBI
Video evidence shows he was only on the roof for about six minutes, killing one person and wounding two others when he opened fire at the event on 13 July.
Crooks, who left several explosive devices in his car, had searched for information about bomb components as early as 2019.
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Trump gunman’s motive ‘unclear’
Image: The FBI recovered the rifle used by Thomas Crooks to shoot and injure Donald Trump in July. Pic: FBI
Crooks searched for Mr Trump’s campaign events as early as September 2023 and continued looking for rallies for both candidates near where he lived in western Pennsylvania, and the dates of both the Republican and Democratic presidential conventions.
Mr Rojek described how Crooks eventually became “hyper focused” on the Trump rally in Butler, Pennsylvania, when it was announced in early July “and looked at it as a target of opportunity”.
In the days leading up to the event, he researched information about the site, including where Trump would speak.
His online search history revealed questions and phrases like: “Where will Trump speak from at Butler Farm Show?”, “Butler Farm Show podium” and “Butler Farm Show photos”.
Image: The layout of the rally in Pennsylvania.
Image: The gunman was on the roof of a building for about six minutes before opening fire
The FBI says it has already conducted nearly 1,000 interviews.
The new details suggest Crooks was a man who investigators believe had a strong interest in explosives, major events and prominent political figures, but they have not been able to assign a single motive.
“We have a clear idea of mindset, but we are not ready to make any conclusive statements regarding motive at this time,” Mr Rojek said.
Officials say they have not found any evidence Crooks worked with other people, or had been directed by a foreign power.
There were also no traces of illegal drugs or alcohol in his system.
Meanwhile in an interview with talk show host “Dr Phil” McGraw, Donald Trump claimed that Joe Biden and Kamala Harris made it difficult for him to have adequate Secret Service protection at his campaign rallies.
The former president said: “He (Joe Biden) always made it very tough for us to have the proper number of Secret Service people.”
He added: “I don’t know whose fault it is, but I will tell you, I’d have these massive rallies with 50-60,000 people, more, and our people were always fighting to get more security, more Secret Service, and he knew that we didn’t have enough”.
Preliminary investigations determined there were significant failures by the Secret Service.
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Donald Trump has purged top military figures in the Pentagon, including firing America’s most senior commander.
He also pushed out five other admirals and generals in an unprecedented shake-up of US military leadership.
The Pentagon had been bracing for mass firings of civilian staff as well as a dramatic overhaul of its budget and a shift in military deployments.
Chairman of the Joint Chiefs of Staff, Air Force General Charles ‘CQ’ Brown – America’s highest-ranking general and only the second black general to serve as chairman – was fired with immediate effect.
The president will also replace the head of the US Navy, a position held by Admiral Lisa Franchetti, the first woman to lead a military service, and the Air Force vice chief of staff, the Pentagon said.
He is also removing the judge advocates general for the Army, Navy and Air Force, critical positions that ensure enforcement of military justice.
The campaign to rid the military of leaders who support diversity and equity in the ranks has been condemned by Democrats.
There is nothing apolitical about Trump
By David Blevins, Sky News correspondent
The purge of America’s top military officials, carried out by President Trump and his Defence Secretary Pete Hegseth, is unprecedented, writes Sky News correspondent David Blevins, in Washington.
Their dismissal late on Friday sent shockwaves through the defence establishment and raised concerns about the direction of military leadership.
General Charles Q Brown, chairman of the Joint Chiefs of Staff, was abruptly removed two years into his four-year term.
America’s most senior military officer comes into office two years into a presidential term, meaning they serve under two presidents.
The role is intended to be apolitical but there is no such thing as non-partisan politics in the Trump playbook.
Brown’s tenure had been marked by a focus on diversity, equity and inclusion, putting him at odds with the administration.
Prior to his appointment as defence secretary, Hegseth questioned Brown’s promotion, hinting that it had been influenced by race.
In his book, The War on Warriors, Hegseth wrote: “The military standards, once the hallmark for competency, professionalism, and ‘mission first’ outcomes, have officially been subsumed by woke priorities.”
Supporters of the administration argue the changes are necessary to refocus military priorities in line with the president’s objectives.
But critics contend that such a sweeping overhaul of leadership undermines the apolitical nature of the military and unsettles the rank and file.
Rhode Island’s senator Jack Reed, the top Democrat on the Senate Armed Services Committee, said: “Firing uniformed officers as a type of political loyalty test… erodes the trust and professionalism that our servicemembers require to achieve their missions.”
Representative Seth Moulton, a Massachusetts Democrat, said the firings were “un-American, unpatriotic, and dangerous for our troops and our national security.”
“This is the definition of politicising our military,” he said.
Senator Jack Reed of Rhode Island, the top Democrat on the Senate Armed Services Committee, said: “Firing uniformed leaders as a type of political loyalty test, or for reasons relating to diversity and gender that have nothing to do with performance, erodes the trust and professionalism that our servicemembers require to achieve their missions.”
During the election, Mr Trump spoke of firing “woke” generals and those he saw as responsible for the withdrawal from Afghanistan.
Defence secretary and former Fox News personality Pete Hegseth has questioned whether General Brown would have got the job if he were not black.
There is no indication his appointment was not based on merit.
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On Friday, Mr Trump said: “I want to thank General Charles ‘CQ’ Brown for his over 40 years of service to our country, including as our current Chairman of the Joint Chiefs of Staff.
“He is a fine gentleman and an outstanding leader, and I wish a great future for him and his family.”
It’s unclear who Mr Trump will choose to replace the judge advocates. Mr Hegseth previously criticised military lawyers, saying most “spend more time prosecuting our troops than putting away bad guys”.
Dozens of supporters were outside court as the man accused of fatally shooting the chief executive of UnitedHealthcare made his first appearance.
Luigi Mangione has pleaded not guilty to multiple counts of murder following the 4 December killing of Brian Thompson, 50, outside a midtown Manhattan hotel.
The 26-year-old is accused of ambushing and shooting the executive as he walked to an investor conference.
Image: Luigi Mangione supporters stand outside the Supreme Court. Pic: AP Photo/Stefan Jeremiah
Dozens of people who showed up in court to support the suspect including former army intelligence analyst Chelsea Manning who was jailed for stealing classified diplomatic cables.
Dozens more queued in the hallway.
More on Luigi Mangione
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Mangione is also facing federal charges that could carry the possibility of the death penalty.
The judge set a deadline of 9 April to submit pre-trial motions.
Image: Luigi Mangione is accused of fatally shooting Brian Thompson. Pic: Steven Hirsch/New York Post via AP
In addition to the New York cases, Mr Mangione also faces charges of forgery, carrying firearms without a licence, and other counts in Pennsylvania, where authorities arrested him at a McDonald’s.
Police say he was in possession of a gun, bullets, multiple fake IDs and a handwritten document that expressed “ill will” towards corporate America.
He is being held in a Brooklyn jail alongside several other high-profile defendants, including music mogul and rapper Sean “Diddy” Combs, and disgraced crypto entrepreneurSam Bankman-Fried.
The killing prompted some to voice their resentment at US health insurers, with Mangione attracting a cult following.
A poll taken in the wake of the shooting showed most Americans believe health insurance profits and coverage denials were partly to blame for the incident.