Footage released by the Crown Prosecution Service shows Marcus Arduini Monzo, who is accused of killing 14-year-old Daniel Anjorin, unboxing and wielding a samurai sword.
The 37-year-old is accused of murdering Mr Anjorin and attempting to kill four others during a 20-minute rampage in Hainault, north-east London, on April 30, 2024. He denies all charges.