Reaction and latest on the explosion outside a fertility clinic in Palm Springs

UPDATE (12:50 PM): Authorities held a press conference Sunday and confirmed the identity of the suspect in the deadly explosion at a Palm Springs fertility clinic.

The FBI says 25-year-old Guy Edward Bartkus, a resident of Twentynine Palms, has been identified as the suspect.

"The subject had nihilistic ideations and this was a targeted attack against the IVF facility," said Agent Akil Davis with the FBI Los Angeles Field Office.

He is believed to have detonated the explosive which injured four people and claimed his own life.

"We believe he was attempting to livestream it and yes, that is also part of our investigation," Agent Davis shared.

Overnight, multiple law enforcement tactical officers were seen outside a residence late Saturday morning, about an hour away from the Palm Springs fertility clinic.

Authorities confirm that they were executing a search warrant at that residence, which was related to the ongoing investigation.

The bombing is being investigated as an act of terrorism.

PALM SPRINGS, Calif. (NBC, KYMA/KECY) - Palm Springs residents expressed shock and fear the moment a car exploded outside of a fertility clinic Saturday.

Some said they even felt the blast from inside their homes while others expressed relief that more people were not hurt along the busy road where the explosion took place.

"We had fallen asleep on the couch watching a movie, and then at about 11 a.m. maybe a little bit before, we heard this massive explosion that I thought was thunder. And I said, 'Jesus, that was really strong.' And then the dog started barking, and we realized that must be something else, because the siren took out. And then about five, six minutes after that.

You know, I think, again, I'm from Ireland, so I think it's become kind of normalized in in America, which is a bit unfortunate, and I honestly thought it was going to happen at some point somewhere around me, but not necessarily half a mile down the street."

Devin Flanagan, Palm Springs resident

"I was just chilling on the couch, and I heard this just huge boom. It's like a sonic wave of sound. And I jumped up and ran outside and saw this large black smoke just rising up, almost like a mushroom cloud. It was, it was pretty terrifying. And and then people started streaming south towards the site where obviously something had blown up. So it was, yeah, it was, it was very scary.

It was just so unnatural. I mean, it was so dark, black and and the first thought, the first thought I had when I heard the sound, felt. The sound was that something had crashed into my building. It was that that rattling, and then when I saw the smoke, I didn't know what to think. I didn't know what that could be. I've I was in Oklahoma City for the Oklahoma bombing way back when. In, and I didn't know what that was, either. And it, you know, it's just a terrible, terrible, terrifying thing to go through.

I just can't believe this happened here. I don't think that this is that I'm unsafe here, but, but it just goes to show you that, you know, life can be really short. Someone lost their life today and and that's a very sad event."

Dustan Burns, Palm Springs resident

"A huge explosion. And I started thinking, based on the sound, I thought it didn't sound like a car crash and it didn't sound like an earthquake, because that has a different kind of exploding sound when it's big enough. And so it just sounded like some kind of bomb was thrown off. And I was sitting there startled, really. You know, do we run outside or is there more? You don't know what to do, but we all kind of ran outside to see what was going on and check on each other.

This street, Indian Canyon, North Indian Canyon, is very busy. And the fact that there were no cars going by when it happened is beyond amazing, because there easily could have been 10 cars going past, you know, so a lot of lives, many lives could have been lost. I mean, I walked fast there just the other day."

Gerard Karcher, Palm Springs resident

Earlier in the evening, authorities held a press conference confirming one person was killed and four others were injured.

During the press conference, the FBI called the blast an "intentional act of terrorism."

"As our investigation unfolds, we will determine if it's international terrorism or domestic terrorism. No matter which one, the joint terrorism task force is the lead on this," said Agent Akil Davis with the FBI Los Angeles Field Office.

Some buildings were severely damaged and the blast field covered several blocks in all directions.

The FBI says this bombing investigation is one of the largest the agency has been involved in in Southern California.

"I'm really saddened by today's attack on our city. But I'm also hopeful because this city will rise. And this city has resilience and it will be strong as a result of this.

I also want to make sure our community understands this is an isolated incident. I am confident the community is not at risk any longer. So we will continue to process our investigation. We are moving as rapidly as possible at multiple locations, and we are doing everything we can to make sure we understand the why as well as what happened."

Chief Andrew Mills, Palm Springs Police Department

It is still unclear what the possible motive may have been, or if a nearby fertility clinic was targeted.

KYMA will keep you updated on the latest details.