Authorities investigating the deadly shooting attack at a San Diego mosque are examining a disturbing manifesto believed to have been written by the two teenage gunmen before the massacre, according to law enforcement sources.

Investigators are working to determine whether the 75-page document was authored by 17-year-old Cain Clark and 19-year-old Caleb Vasquez prior to the attack that left three people dead before the two suspects turned the guns on themselves.

According to sources familiar with the investigation, the document contains extremist ideology, racial hatred, and repeated calls for societal collapse and violence.

The manifesto reportedly includes Nazi imagery and symbols identical to those seen on Clark during a livestream of the attack, including references to the Black Sun symbol associated with Heinrich Himmler and Atomwaffen, a violent neo-Nazi organization.

Officials described the writings as a chaotic mixture of antisemitic, anti-liberal, anti-Trump, homophobic, and misogynistic rhetoric, driven largely by anger and resentment over the authors’ personal grievances and frustrations.

Law enforcement sources said investigators possess a copy of the manifesto and currently believe it is authentic.

Jennifer Du, who lives across the street from Clark’s Southern California home, said she encountered the teen one day before the shooting.

“It’s been unreal. I saw him literally the day before. He just stood there,” Du, 30, told The California Post.

“I didn’t know if he was watching me or something, but he just got food delivery and went back in.”

Another neighbor, identified only as Marne, said Clark’s family appeared ordinary and recalled frequently seeing the teenager practicing martial arts.

“As far as we knew he was very nice. They were a nice family,” said the neighbor, Marne, 85, who declined to provide her last name.

“We were just flabbergasted,” she added of finding out about the attack. “We thought, ‘Oh my god,’ we couldn’t believe it. Just flabbergasted.”

One section of the document, believed to have been written by Clark, reportedly rejected both left-wing and right-wing politics while expressing hatred toward both sides.

Investigators said Clark allegedly wrote that he identified ideologically with Adolf Hitler and cited notorious mass murderers including Ted Kaczynski, Timothy McVeigh, and Anders Breivik as inspirations.

The document also reportedly praised the gunman responsible for the 2019 Christchurch mosque massacre in New Zealand, referring to him as “Saint Terrant” and describing that attack as a model for livestreaming mass violence intended to inspire copycat attacks.

Authorities said the writings contained racist and hateful attacks directed at numerous groups, including Muslims and Jews, while describing the authors as “accelerationists” seeking to ignite an “all-out race war” that would lead to societal collapse.

In another portion believed to have been written by Vasquez, he allegedly expressed anguish and humiliation over his height.

Investigators said Clark also wrote that he felt no remorse over the planned attack and indicated that, if he survived, attorneys would deal with the aftermath.

The manifesto further reportedly stated that the shooting was not motivated by a desire for fame, but rather by hatred toward the victims and other cultures, while also indicating that Clark never expected to survive the assault.

Online accounts linked to Clark allegedly featured Nazi slogans as well as images of Adolf Hitler and German military formations from World War II.

Police said Clark and Vasquez killed three people during Monday’s attack, including mosque security guard and father of eight Amin Abdullah, whom authorities credited with helping prevent an even larger loss of life. An online fundraiser established for Abdullah’s family raised nearly $2 million within its first day.

The other two victims were identified as mosque members Nader Awad and Mansoor Kazziha.

Investigators also said at least one of the suspects allegedly took a firearm from his parents’ residence and left behind a suicide note referencing racial pride.

According to authorities, the livestream footage appears to show Clark fatally shooting Vasquez before turning the weapon on himself.

The FBI and local law enforcement agencies continue to investigate the massacre and are expected to carry out additional search warrants in the coming days.

{Matzav.com}