The suspect, a man in his mid-20s, was armed with a sword and dressed in "medieval clothing", Quebec City police spokesman Etienne Doyon said during a press briefing. Motive of attack not known.
Two Saudi consulate employees, who were part of the team that killed Khashoggi, are facing charges that carry aggravated life sentences with no possibility of early release.
UK counter-terrorism police have charged Khairi Saadallah, a 25-year-old Libyan refugee, with three counts of murder and three counts of attempted murder for a stabbing attack in an English park a week ago.
Minnesota Attorney General Keith Ellison on Wednesday added a more serious second-degree murder charge against former Minneapolis police officer Derek Chauvin in the killing of unarmed black man George Floyd. Three more officers were charged.
Saudi journalist Jamal Khashoggi was killed and dismembered at the Saudi consulate in Istanbul in October 2018, in a case that tarnished the reputation of de facto ruler Crown Prince Mohammed bin Salman.
"The arrest of Felicien Kabuga today is a reminder that those responsible for genocide can be brought to account, even 26 years after their crimes," said Serge Brammertz, chief prosecutor of the Mechanism for International Criminal Tribunals.
A 27-year-old man killed backpacker Grace Millane when she was travelling through New Zealand as part of a planned yearlong trip abroad after graduating from university.
Defendant Evelyn Hernandez, 21, has already served three years of the sentence handed down after prosecutors said she had induced an abortion.
Gabriel Christian Natale-Hjorth and Finnegan Lee Elder confessed to their roles into the murder of Italian military police officer Mario Cerciello Rega.
The country's police force is being accused of the inept and insensitive handling of the case of 10-year-old Farishta, raising questions about the entire justice system.
Journalist Francisco Romero had filed a complaint on April 12 over threats he had received and was enrolled in the Mexican government's protection programme for journalists and activists.
The death of 15-year-old Matlhomola Mosweu in April 2017 caused outrage in a country where deep racial divisions persist 25 years after the end of white minority apartheid rule.
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