The 25-year-old died after authorities say he bombed a Palm Springs fertility clinic. Experts warn that online nihilism is fueling similar violence in the US and Europe.

The attack, though unsuccessful, delivered a seismic shock to patients who feared for the safety of their embryos. But a firefighter’s risky plan averted disaster.

Bartkus is believed to be the person who detonated a bomb at the Palm Springs American Reproductive Center, which offers services like IVF, because he was aligned with the pro-mortalist and anti-natalist movements—the idea that humans should not continue to procreate.

The car bomb he allegedly set off killed him and injured four people.There was "no loss of any sensitive material" as a result of the bombing at the IVF clinic, an FBI Los Angeles assistant director in charge said,