A man killed and skinned his own cat before hacking a schoolboy to death 'in an instant' with a samurai sword and left four others seriously injured after cannabis 'triggered a psychotic episode', a court has heard.

Marcus Monzo, 37, of West Beckton, Newham, is accused of murdering 14-year-old Daniel Anjorin while he was on his way to school in Hainault, east London on April 30 last year.

Monzo is also accused of the attempted murders of female police officer PC Yasim Mechem-Whitfield, 35-year-old IT engineer Henry De Los Rios Polina, Sindy Arias and Donato Iwule, who was hit by his van.

Brazilian amateur musician and 'mystic' Monzo, is further accused of a count of causing grevious bodily harm to Sindy Arias and Henry De Los Rios Polina with a katana style sword, wounding with intent and possession of a bladed article.

On the opening day of the trial, the court heard that a post-mortem ruled Daniel died of an 'unsurvivable' injury to the neck.