Guy Bartkus, the sole suspect in the bombing of a Palm Springs fertility clinic, exhibited warning signs prior to the attack that should have been reported to law enforcement, the city’s police chief told CNN Monday.

The subject had nihilistic ideations, and this was a targeted attack against the IVF facility,” an official said.

Guy Edward Bartkus was identified as the suspect accused in the bombing targeting a Palm Springs, CA, fertility clinic, and authorities are investigating a possible manifesto, according to the FBI. The bombing occurred on May 17,

What does nihilistic mean? What is does anti-natalist mean? What to know about the terms used by the FBI to describe the fertility clinic suspect.

The FBI declared a “blast zone” and cleared residents in the Twentynine Palms neighborhood over concerns that bomb-making materials could be inside a home.

Guy Edward Bartkus, 25, of Twentynine Palms, California, was identified by the FBI in the apparent car bomb detonation that damaged the American Reproductive Centers fertility clinic on Saturday.

The car bombing outside a California fertility clinic that killed one person and injured four others appears to have been driven by anti-natalist ideology, according to two senior law enforcement officials briefed on the incident.

Here's the latest on the suspect in "one of the largest bombing investigations we've had in Southern California," according to the FBI.

Guy Edward Bartkus, 25, is allegedly responsible for bombing a fertility clinic in Palm Springs, California. He was reportedly a self-proclaimed "pro-mortalist" and left behind "anti-pro-life" writings.