A portion of Palm Canyon Drive is blocked off after an explosion at a fertility clinic which killed one person and injured five others on May 17 in Palm Springs, California. Photo: Gina Ferazzi / Los Angeles Times via Getty Images)

The FBI has identified Guy Edward Bartkus, 25, as the primary suspect behind a Saturday attack on a Palm Springs, California fertility clinic, officials said Sunday.

The big picture: Bartkus is also believed to be the person who died in the explosion, which authorities are describing as an “intentional act of terrorism.” Four others were injured in the blast, but have all since been released from the hospital.

• The FBI believes he was the person found near the vehicle used in the attack, a 2010 silver Ford Fusion sedan, said Akil Davis, the head of the FBI’s Los Angeles field office, in a Sunday news conference.
• The damage from the explosion extended for blocks with “several buildings damaged, some severely,” according to a statement from Palm Springs Chief of Police Andy Mills.

Driving the news: Bartkus had “nihilistic ideations,” Davis said. Law enforcement officials are still piecing together the timeline of Bartkus’ movements before the explosion, he said, and are “combing through” a manifesto.

• Davis also said that officials believe Bartkus was attempting to livestream the attack.
• The FBI is working through some “technical means” to positively identify the deceased individual, Davis said, but current evidence leads them to believe it is Bartkus.

He reiterated that the explosion was a “targeted attack” against the IVF facility. Earlier in the briefing, he said that all of the embryos in the facility had been saved.

What they’re saying: Attorney General Pam Bondi said in a statement Saturday that law enforcement is working to learn more but that “[v]iolence against a fertility clinic is unforgivable.”

Threat level: Davis said that the Saturday blast was likely “the largest bombing scene that we’ve had in Southern California.”

• Pieces of the vehicle were thrown “hundreds of feet into the air,” he said.

The bottom line: Mills emphasized that he is “absolutely confident” that the city is safe and that there is “no continuing threat.”

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Editor’s note: This story has been updated with additional information throughout.