CCTV footage and police bodycam footage showed officers rushing into the building at the command of a member of the public. He was thrown to the ground and arrested on suspicion of attempted murder.

More footage shows the aftermath of the attack, where the children's bodies were found. One officer can be heard saying: "She's dead."

Clips were shown of a little girl trying to escape through the front door, only to be caught and pulled back by Ruda Kubana. She is seen trying to get away, but collapses.

A video showed another girl lying in the street after being attacked and being helped by a member of the public.

Gasps and wails could be heard from the public gallery next to the injured children.

Ruda Cubana can be seen entering Hart Space. There is a pause, then loud screaming can be heard and children can be seen running from the building.

Prosecutors warned the next clip was harrowing.

Footage was shown of Rudakubana taking a taxi on the way to the attack. He asked the taxi driver which building it was. He got out of the car without paying, and the taxi driver could be heard shouting behind him: "Oops! You haven't paid yet, bro, what are you doing?"

The court was shown a CCTV photo of Ruda Kubana wearing a green hoodie, black trousers, sneakers and a coronavirus-style mask to hide his identity.

Photos of Hart Space, a white two-story building on a residential street, are also on display. There is a floor plan showing where the children were at the time of the incident.

CCTV footage and pathology evidence are due to be played to the court. Members of the public who do not wish to attend have been invited to leave the court.

Deanna Heer KC explained how the children fled the building, with some of the attacks taking place outside.

Some of the details of the children's injuries are harrowing. The family asked the media not to reveal too much about what happened to the children.

Another surviving dance teacher, Heidi Liddle, described hiding in the toilet with a child and feeling the door rattle but it wouldn't open because her foot was on it .

Deanna Heer KC continues by reviewing the timeline of events.

She explained that Rudakubana took a taxi to the Hart Space, where the dance classes took place. Less than 30 seconds after entering the building, screams could be heard inside.

When he came in, the children were making bracelets. Without saying a word, he grabbed the child closest to him from behind and put an arm around her, recalled dance teacher Leanne Lucas, who survived the attack. He gave birth to a second child and then a third, Alice. She didn't realize what had happened until he approached her and stabbed her.

His lawyer, Stanley Reiz KC, said Rudacubana suffered chest pains. The court showed no sympathy for the killers and Judge Goose said proceedings would continue.

"I can't go on like this!" Rudacubana yelled at the prosecutor.

The judge said he chose the moment when the proceedings began to cause a stir.

"I didn't choose this moment to feel pain. It's not my fault," Rudacubana shouted.

After the judge urged to continue, the prosecutor tried to speak.

Rudacubana shouted: "Don't continue!" past the prosecutor.

Judge Goose said, "Get him out of here."

He will be brought back after half-time.

"I won't let him bother."

Rudacubana interrupted proceedings by shouting "I need to speak to the paramedics because I don't feel well!" multiple times, adding: "I will not remain silent."

His lawyers said his health in prison was concerning because he had refused to eat for several days and drank very little. But this morning he was deemed fit to attend the hearing.

Prosecutor Deanna Heer KC reads the facts of the case. She said he carried out a "premeditated, planned attack" that was "sadistic in nature".

Weapons were found in his home, including ricin he produced, as well as a horror manual.

After watching videos of the atrocities, she said, he "began to imitate them."

He later said the children's deaths were "a good thing."

The charges are currently being read out in court: three counts of murder, 10 counts of attempted murder, possession of a knife, production of ricin and possession of a terror manual. Rudacubana has pleaded guilty to all of them.

Rudacubana tilted his head forward so that only the top of his head was visible. Staff confirmed to the judge that it was him.

Ruda Kubana is in the dock and Judge Gus is now taking his seat.

It was unclear what caused the delay, but 45 minutes after the hearing began, Rudacubana still had not arrived in the dock.

The judge usually waits until all parties are seated before entering the courtroom.

Key members of the public, media and legal advisors appear to be present at this time. The delay appears to be caused by the perpetrator.

The courtroom was silent, save for occasional murmurs between the barristers.