A suspect believed to have carried out the bombing outside a California fertility clinic on Saturday has been identified as 25-year-old Guy Edward Bartkus.

In one writing, Bartkus described being a “pro-mortalist” as someone who intends to bring about their own death as soon as possible in order “to prevent your future suffering, and, more importantly, the suffering your existence will cause to all the other sentient beings.”

In addition to his writings, Bartkus also recorded a 30-minute audio clip describing his motives.

“I figured I would just make a recording explaining why I’ve decided to bomb an IVF building, or clinic. Basically, it just comes down to I’m angry that I exist and that, you know, nobody got my consent to bring me here,” he said in the recording.