Would-be Donald Trump assassin Thomas Matthew Crooks searched for pornography shortly before shooting the former president.
The search was the last one Crooks, 20, conducted on his phone before he injured Trump while he was speaking at a rally in Butler, Pennsylvania, last Saturday.
FBI investigators discovered the search history after finally cracking his encrypted Samsung Android phone days after the assassination attempt.
Other inquiries included Princess Kate, as well as fellow British royals, both Trump and President Joe Biden, and school shooter Ethan Crumbley.
Would-be Donald Trump assassin Thomas Matthew Crooks used his last internet search to look for pornography
The senior law enforcement source who briefed the Daily Beast on the porn search said it was “not unusual” among high-profile killers.
Sandy Hook Elementary School mass shooter Adam Lanza had child abuse images on his phone and al-Qaeda terrorists also viewed extreme pornography.
Agents were initially unable to access Crooks’ phone and sent it to the Operational Technology Division at FBI headquarters in Quantico, Virginia.
The only other recent activity on his phone were text messages from his parents asking where he was after he didn’t come home from the shooting range when they expected him.
Crooks was shot and killed by Secret Service marksmen after his shots grazed Trump’s ear, killing rally attendee Corey Comperatore and wounding another.
Investigators have turned to his laptop and external hard drives found during a search of his parents’ home, where he lived.
The crooks had images of the Princess of Wales on their phone, sources told DailyMail.com, and also sought out FBI Director Christopher Wray and US Attorney General Merrick Garland.
It remains unclear why Crooks was searching for Kate, the only non-American in the group of people found in his internet search history.
Gunman Thomas Crooks (pictured) also investigated Princess Kate during the planning of her murder, the FBI has revealed
Donald Trump (pictured) was nearly killed by a gunman on Saturday during a rally. He was hit in the ear when he turned his head at the last second.
The Princess of Wales has only made limited public appearances this year as she undergoes cancer treatment. There is no evidence that Crooks had any plans to travel to the UK.
Crooks’ interest in her was revealed when the FBI searched her two cell phones and a laptop.
There they discovered that he had looked up the dates of Trump’s rally in Butler, Pennsylvania, where he ultimately committed his assassination attempt.
Searches were also conducted for dates of the Democratic National Convention, researchers said in a private briefing with lawmakers.
They also found photos of Biden and Trump in Crooks’ material.
FBI officials said at the briefing that Crooks’ search history indicated he had a strong interest in famous people, sources present on the call confirmed to DailyMail.com.
The Princess of Wales appeared in public again at Wimbledon last Sunday, just hours after the attempted assassination of Donald Trump.
Crooks was a dietary assistant at Bethel Park Skilled Nursing and Rehabilitation Center, where she provided food and care to elderly and sick people who had been hospitalized.
Following the attempted assassination of Mr Trump, King Charles wrote to the former president in a letter which was delivered by the British Embassy in Washington DC.
Charles survived his own assassination attempt in 1994.
The US Secret Service faced serious questions last night about how a gunman managed to get close enough to shoot the former president.
Secret Service Director Kimberly Cheatle has been subpoenaed to testify before a U.S. House of Representatives committee on July 22. She faces calls for her to resign or be fired.