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.

Palm Springs, California, reproductive center bombing suspect identified on Sunday by authorities providing the latest on the incident that killed one, injured four.

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.