Footage of the moment a killer slashed at police with a sword after he stabbed a schoolboy to death in the street has been shown to a jury.
Marcus Arduini Monzo, 37, is accused of murdering Daniel Anjorin during a 20-minute rampage in Hainault, east London, on April 30 last year.
Video shows the officers attempting to stop Monzo who strikes an ambulance with the sword as paramedics arrived to treat Daniel.
An officer attempting to help the victim on the ground was then approached by Monzo wielding the weapon before he was Tasered, the Old Bailey heard.
During the spree of violence, he virtually decapitated Daniel and attacked a pedestrian, two police officers and a couple in their own home, jurors were told.
One witness described Monzo screaming “in delight” after mortally wounding the boy who had been wearing his PE kit with his earphones on.
Afterwards, he likened events to the Holywood movie The Hunger Games and claimed to have an alternative personality of a “professional assassin”.
Metropolitan Police Inspector Moloy Campbell told jurors how he was injured as he tried to detain Monzo.
Before arriving at the scene, he heard on the radio that one of his colleagues had been stabbed.
A member of the public waved him down and pointed towards a car park and garage area.
Insp Campbell told jurors: “Our purpose was to arrest and protect the other officers. I decided to confront the defendant.”
He sprayed him first but the defendant “blocked” the move and “came for” the officer, jurors heard.
Mr Campbell went on: “I dropped my spray and drew my baton. I struck him or attempted to strike him. I believe I connected with him at least twice.
“Mr Monzo was slashing at me with a large sword. He made contact with my hand and certainly with my bodyworn camera.”
Asked how he felt, the officer told jurors: “I was disappointed to put it bluntly because it meant I could not carry on what I was trying to do.”
Trial judge Mr Justice Bennathan observed: “Presumably you were terrified because someone is slashing at you with a sword.”
The witness replied: “It was frightening. I remember my priority to try to carry on.”
He said he saw blood when he looked down at his hand and his baton was also covered in blood.
Mr Campbell said he found himself “backed into a corner” and withdrew, and asked a colleague to put a tourniquet on his thumb.
He was treated at the scene and taken to hospital as the defendant was detained and arrested a short time later, the court was told.
Previously, the court has heard how Monzo launched a series of attacks by driving his grey Ford Transit van into Donato Iwule, who was “catapulted” into a nearby garden before the vehicle smashed into a concrete pillar and fence.
He went on to hit Mr Iwule in the neck with his sword before running away, it is alleged.
In a statement read to the court, Maria Olmos described Monzo’s reaction after the attack saying: “As he fell to his knees, the man raised both his arms to the sky.
“At the time of doing so he let out an extremely loud scream. It wasn’t a scream of pain, it was a scream of delight – my interpretation was he was celebrating.
“His eyes and mouth were wide open when he screamed.”
Jurors were shown further CCTV and police body-worn camera footage of Monzo running through the residential area armed with a Samurai sword.
PC Yasmin Mechem-Whitfield pursued the armed defendant through a series of alleyways through residential properties, the court heard.
Monzo struck her three times with the sword that had a 60cm blade using “extreme force”, the prosecutor said.
It is alleged the defendant entered a property and attacked a couple who were sleeping in an upstairs bedroom with their young daughter nearby.
Forensic pathologist Dr Ashley Fegan-Earl told jurors that Daniel’s injuries were “absolutely unsurvivable”.
He said that Daniel’s cause of death was sharp force trauma to the head and that Monzo had used “an extreme level of force”.
Jurors later heard from Monzo’s brother Eduardo, who said Marcus had consumed ayahuasca – a hallucinogenic plant-based brew commonly used in South America – during a stay at a remote retreat in the Amazon.
“He told me he had drunk ayahuasca,” the witness said through a Portuguese interpreter. “It’s quite common in the north of Brazil.
“He didn’t specify how much, but I believe he was drinking it quite a lot.
“I became slightly concerned because I had heard some people had a negative response to that drink.”
After his arrest, no trace of DMT – the class A hallucinogen found in ayahuasca – was detected in Monzo’s system.
Monzo attended retreats in India and the Amazon, before beginning to withdraw from the family, his brother said.
Eduardo added Monzo spent hours meditating, sleeping on the floor and avoiding physical contact, particularly with their mother.
“He would spend 10 to 20 hours a day meditating,” Eduardo said. “He kept his door closed. He wasn’t the Marcus I knew.”
Eduardo said Monzo followed a YouTube spiritual guru named Sadhguru, but later burned a picture of him and claimed the guru was “a demon who put a spell on him”.
He was “not the same person”, the witness said, and in the days before the attack had started “talking strange” and avoiding family contact.
Monzo denies Daniel’s murder and the attempted murders of Mr Iwule, Sindy Arias, Henry De Los Rios Polania and Ms Mechem-Whitfield, as well as wounding Mr Campbell with intent.
He also denies aggravated burglary and possession of a bladed article relating to a kitchen knife.
Jurors have heard it is not denied that Monzo carried out the attacks.
Experts will be called during the trial to give evidence on his state of mind at the time, as Monzo is putting forward diminished responsibility as a defence to murder.
Monzo previously admitted two counts of having an offensive weapon, namely two swords.
