The community, r/Efilism, is devoted to a philosophy mentioned on a website published before Saturday's bomb blast.

The FBI believes the suspect in the Palm Springs explosion left behind "anti-pro-life" writings before carrying out the attack, officials said.

A loud explosion-like sound was heard in California's Palm Springs on Saturday. Locals posted photos and videos of what appeared to be a human carcass. Footage showed windows shattered on several buildings.