The Menendez brothers gave a chilling reply erstwhile they were asked point-blank precisely erstwhile they decided to termination their parents.
Dateline NBC airs the astonishing speech during a two-hour special on Friday night.
During the broadcast, host Keith Morrison revisited a 2017 jailhouse interrogation erstwhile helium asked Lyle Menendez: 'When did you and Eric determine to termination your parents?'
Lyle responded: 'We didn't determine to bash it - it was we yet conscionable benignant of got overwhelmed with this panic and emotion and made the determination to tally successful that room.'
More than 3 decades later, the motive down the murders is inactive a large question successful the lawsuit that has beguiled audiences for years.
Morrison told NBC newsman Liz Kreutz helium has been covering the lawsuit for a agelong time, but admitted: 'I don't cognize what the reply is.'
The Menendez Brothers: Lyle, present 56 (pictured left) and Erik, 53. Both men were 18 and 21 erstwhile they murdered their parents
Dateline big and broadcast writer Keith Morrison
Brothers Lyle, present 56 and his brother, Erik Menendez, present 53, person been successful situation for the past 34 years for killing their parents Jose and Mary Louise 'Kitty' Menendez successful August 1989 erstwhile they were conscionable 18 and 21.
Erik Menendez wrote a missive to his cousin, Andy Cano, successful which helium alludes to serious, and long-term, maltreatment astatine the hands of his begetter Jose
Both were convicted of the execution successful 1996 aft their archetypal proceedings was declared a mistrial.
The brothers ne'er denied sidesplitting their parents by shooting them 14 times with 12-gauge shotguns successful their million-dollar Beverly Hills home.
The brothers claimed they acted successful self-defense.
In October, determination was renewed involvement successful the lawsuit aft Netflix premiered 'Monsters: The Lyle and Erik Menendez Story,' created by Ryan Murphy and Ian Brennan.
Murphy told Variety the pair 'never imagined the Netflix bid would beryllium a large catalyst for renewed involvement successful the lawsuit and called for the existent Erik and Lyle Menendez to beryllium released from prison.'
Lyle (left) and Erik Menendez (right) astatine their proceedings successful August 1989
A missive Erik wrote to his relative Andy Cano alludes to superior and semipermanent maltreatment astatine the hands of his begetter Jose.
In the Dateline episode, Morrison interviewed archetypal authoritative Pam Bozanich, who tells him that she does not judge the brothers were sexually abused.
Bozanich besides questioned a critical caller portion of evidence: the missive that Erik wrote to his relative astir being acrophobic of his father.
'I'd emotion to cognize erstwhile that missive was written. I judge that radical fabricate things,' she said.
The Menendez Family: (left to right) Erik and Lyle with parents Kitty and Jose successful center
The duo, past conscionable 18 and 21, killed basal extracurricular their million-dollar Beverly Hills location successful August 1989 - the household country oregon den was wherever the execution occurred
The Menendez brothers are presently serving beingness sentences without parole for the murders of their parents.
Last month, Los Angeles County District Attorney George Gascón, who has since mislaid his reelection bid, held a property league recommending that the brothers beryllium resentenced successful their bid for freedom.
In attendance was Kitty Menendez' sister Joan, 92, who has agelong advocated for her nephews' release.
Gascon's recommendation was that they beryllium eligible for parole instantly - but it volition yet beryllium up to a tribunal to find the last condemnation for the brothers.
'I judge they person paid their indebtedness to society... and the strategy provides a conveyance for their lawsuit to beryllium reviewed by a tribunal of law,' Gascon said astatine the time.
The announcement came connected the backmost of mounting assemblage unit to reconsider the beingness sentences without parole Erik and Lyle received astatine their 1996 trial.
After Gascon mislaid this week's predetermination to former US Assistant Attorney General Nathan Hochman, this presents a caller twist successful the case.
The country extracurricular the Menendez family's Beverly Hills mansion erstwhile constabulary arrived connected August 20, 1989
In the Dateline episode, Morrison spoke to Gascon astir the imaginable re-sentencing earlier helium mislaid the contention connected Tuesday.
Hochman, who is expected to instrumentality bureau connected December 2, told CNN on Wednesday 'before I tin marque immoderate determination about the Menendez brothers' case, I volition request to go thoroughly acquainted with the applicable facts, the grounds and the law.'
'I volition person to reappraisal the confidential situation files for each brother, the transcripts from some trials, and talk to the prosecutors, instrumentality enforcement, defence counsel, and the victims' household members.'
'If for immoderate crushed I request further time, I volition inquire the tribunal for that time.'
A resentencing proceeding is acceptable for December 11. Hochman said helium would determination arsenic 'expeditiously' arsenic imaginable to reappraisal the landmark case.