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.

Anti-natalist ideology appears to be the motive behind Saturday’s deadly bombing in Palm Springs, two senior law enforcement officials told NBC News.

Authorities are investigating what appear to be radical views that Guy Edward Bartkus expressed online before the fertility-clinic attack Saturday,

The suspect, 25-year-old Guy Edward Bartkus, was killed in the Palm Springs blast, authorities say, and left behind 'anti-pro-life' writings after he tried to livestream the bombing and died

Bartkus has been named as a suspect in the bombing outside a Palm Springs fertility clinic, two law enforcement sources familiar with the investigation told KCAL News. He also allegedly stated in writings and recordings that he was a “pro-mortalist” — or against bringing people into the world against their will, the sources added.

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.