Police seize over 30 guns from homes linked to San Diego mosque attackers

Remily said investigators had already found writings on the suspects after the shootings and were working to obtain additional warrants for devices recovered from the scene.

“We’ve also executed search warrants on the electronic devices the subjects had with them at the time of the incident, and we’re in the process of obtaining additional search warrants for devices in the vehicle they used,” he said.

“We’re still looking through electronics to give us the answers, but again, what I can say is they definitely had a broad hatred towards a lot of folks,” he added.

The shootings are being investigated as a hate crime.

Multiple media reports identified the suspects as Cain Clark, 17, and Caleb Vazquez, 18.

Both suspects died of self-inflicted gunshot wounds after they attacked the mosque and opened fire on a landscaper just blocks away, police said.

Remily said investigators are continuing to comb through a manifesto that has been discovered over the course of the investigation.

“We are dedicating every resource the FBI has to conduct a thorough analysis of that manifesto to try to learn what led to this, but I think also, more importantly, how can we stop future attacks,” he said.

NBC News reported that the document is 75 pages long and was written by both suspects. It reportedly contained extremist views that were Islamophobic.

NBC, citing law enforcement officials briefed on the document, said the authors referred to a radical white supremacist dogma known as accelerationism, which takes as its goal the destruction of society to form a white ethnostate.