A teenager obsessed with the Columbine massacre said he and his brother stabbed their family and planned to go on a mass shooting spree during a graphic police interview played at his trial on Thursday.

Michael Bever, then 16, told Broken Arrow Police Detective Eric Bentz in a videotaped interrogation that his older brother Robert was motivated by a hatred of 'everyone' and a desire to become 'famous', while he only wanted to 'get a learner's permit'.

The pair went on to fatally stab their parents, two brothers and a sister but were delayed because their victims fought back. They then had to flee when one sibling managed to call 911. Two sisters, 13 and 2, survived and are both with a new family.

Michael Bever, (pictured in court, on April 18, 2018, in Tulsa) told Broken Arrow Police Detective Eric Bentz in a videotaped interview that his older brother Robert (right) was motivated by a hatred of 'everyone' and a desire to become 'famous'

Speaking to Detective Bentz on July 22, 2015, just after the attack at around midnight on July 21, Michael said the plan was to murder their relatives quickly and quietly before stealing a car and driving it to Washington State, Tulsa World reported.

There they would stop off at petrol stations and restaurants, and use a stash of firearms purchased from a gun shop and 2,250 bullets to shoot five people at a time at random before driving off to their next target.

Michael, now 19, has pleaded not guilty to five counts of first-degree murder and one count of assault and battery with intent to kill. His attorneys say Robert, who pleaded guilty in 2016 and received life without parole, was responsible for the atrocity.

In the videotaped interview played to the jury, Michael said he and Robert started planning the attack around June 20, 2015, after the older sibling realized he could purchase guns and bullets online.

Explaining then 18-year-old Robert's apparent motive to detectives, Michael said: 'He says he hates everyone and says he thinks society is pointless.

'I didn't take it seriously at first, it kept escalating.'

'What about you?' an officer asked. 'Do you feel that way?'

'No,' Michael said, before conceding he was fascinated with mass shootings including the Columbine High School Massacre in 1999, during which 12 people died.

Robert (seen in red shirt) killed Daniel, 12 (far right); Christopher, 7 (far left); and Victoria, 5 (center, in pink). His 13-year-old sister (second left) survived, and two-year-old sister Autumn was not harmed in the attack

Speaking after the taped interview was played to the jury, Detective Benz said he had also heart Michael say about his brother: 'He just wanted to be famous. I just wanted to get my learner's permit.'

Michael then described the attack, saying it began 'as we planned' but ultimately failed because their parents David, 52 and April, 44; brothers Daniel, 12, and Christopher, seven, and sister Victoria, five, 'didn't die like they were supposed to'.

The attack began by Robert slashing their 13-year-old sister’s throat, Michael said.

The sister, known only as C.B. ran away. When her mother came to see what had happened, she was also stabbed by Robert - although Michael later admitted to attacking her too.

Michael said then Robert murdered Daniel Jr and Daniel Snr before moving on to kill Christopher and Victoria in a downstairs bathroom. Michael said he stabbed Christopher in the neck, but this was contradicted by an autopsy­­.

The younger brother claimed he ‘had to’ take part in the attack otherwise Robert would kill him.

Parents David, 52 and April, 44, were also killed in the attack. Two sisters, who were aged 13 and 2, survived

The attack stopped at around 11.45pm when there was a knock on the door and the brothers fled, leaving their 23-month-old sister unscathed. The brothers were later found in the woods by a K-9 dog.

Robert was sentenced to life in September 2016 after avoiding execution with a plea agreement aimed at preventing his surviving sister, then 13, from having to testify in court.

Tulsa County district attorney Steve Kunzweiler said Bever's actions were 'savage' and that he 'deserves the death penalty.'

But, he said, 'a death penalty prosecution would result in his teenage sister being forced to recount and relive the brutal details of the carnage that her brothers wrought again and again.'

He also said that the plea deal meant that the second survivor - aged two - would be able to grow up free of the shadow of the killings.

'The toddler sister, who mercifully was asleep and did not witness the horror, would grow up learning details of the carnage in repeated court hearings that could easily stretch into her teen years or beyond,' Kunzweiler said.