The two teenagers suspected of killing three people in an attack on the Islamic Center of San Diego had a manifesto that detailed “broad hatred towards a lot of folks,” including Muslims, the FBI said during a news conference Tuesday.Mark Remily, the special agent in charge of the FBI office in San Diego, offered more details on the gunmen, aged 17 and 18, who opened fire in the city’s largest mosque.“The victims who lost their lives yesterday were there to help others be part of a community that came together in peace,” Remily said. “Instead, they were confronted by teenagers who appeared to have been radicalized online to believe that they didn’t belong because of how they looked or where they worshiped.”

Remily was only able to share a few details of the investigation but confirmed investigators had recovered a manifesto that the FBI is analyzing.

“We are assessing and analyzing all the evidence again,” he said. “It’s very early. 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.”

Law enforcement officials also said the two suspects met online and had in-person contact before the attack. Investigators are still looking into how the pair became radicalized.