Footage of a plane flipping over after landing in poor weather in Toronto, Canada, has also been widely shared online, further fuelling alarm.
The suspect is being held in detention and will appear in court for a preliminary hearing on 18 June, Pirro added.He is believed to have acted alone, said US Attorney General Pam Bondi.
Earlier on Thursday, the FBI searched a Chicago property linked to the suspect.Outside the apartment, neighbour John Wayne Fry told reporters that he had lived in the same apartment building as the suspect for around a year.He said that the suspect displayed a photo outside his flat of a Palestinian-American child who was stabbed to death outside Chicago in 2023.
The killing caused international headlines. The man who killed six-year-old Wadee Alfayoumi was convicted of hate crime charges earlier this month. Officials say he was motivated by hatred for Islam and the conflict in Gaza.It is unclear whether the suspect has had any direct contact with the boy's family.
Fry said that he hadn't talked with the suspect about politics, but said "If I had, I would have talked him out of it."
The suspect had been working at the American Osteopathic Information Association since 2024, according to online records examined by BBC Verify.We also class as volunteers those who signed up to avoid criminal prosecution, which was allowed by law in 2024.
Volunteers have become the fastest-growing category of casualties in our calculations, making up a quarter of those we have identified.In 2023-2024, thousands of volunteers who signed contracts with the Ministry of Defence were sent to the front lines only 10–14 days later. Such minimal training will have dramatically reduced their chances of survival, experts say.
One Russian republic, Bashkortostan, has seen the highest numbers of casualties, with 4,836 confirmed deaths. Most were from rural areas and 38% had gone to fight with no military experience.The one-time payment for signing a Russian army contract in Ufa is 34 times the region's average salary of 67,575 rubles (£600).