Authorities are investigating after an explosion outside a fertility clinic in Palm Springs, California, Saturday morning left at least one person dead in what "appears to be an intentional act of violence," according to the Palm Springs police chief. The motivation behind the attack is still unclear, Palm Springs Mayor Ron deHarte told CNN Saturday afternoon, and added the person killed has yet to be identified. "We don't have the why or who yet," he said. "There's no indication that there's any concern or issues of any additional violence surrounding this whatsoever," deHarte added. The FBI confirmed to CNN that the agency "is responding with investigators, bomb technicians and an evidence response team." The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) is also investigating the incident. Several buildings were damaged in the blast, some "severely," Palm Springs Police Chief Andy Mills saidin a post on Facebook. The incident appears to be "isolated," he said. The blast took place outside American Reproductive Centers in Palm Springs, an upscale city around 100 miles from Los Angeles. Videos from the scene show plumes of smoke, blown out windows on nearby buildings, and sirens sounding off. Ina statement, American Reproductive Centers said that no members of their team were harmed and that their Palm Springs lab, "including all eggs, embryos, and reproductive materials" was undamaged. "Our mission has always been to help build families, and in times like these, we are reminded of just how fragile and precious life is," reads the clinic's statement. "In the face of this tragedy, we remain committed to creating hope—because we believe that healing begins with community, compassion, and care." American Reproductive Centers provides fertility services including in vitro fertilization, surrogacy and egg freezing, according to their website. The American Society for Reproductive Medicine saidin a post on Xthat they were "deeply concerned" about news of the explosion. The blast took place around 11 AM local time, the ATF told CNN in an email. The agency said they "are assisting our state, local, and federal counterparts with the active investigation by providing our unique capabilities and technical expertise." Gov. Gavin Newsom said he had been briefed on the explosion and that he and his wife "are keeping everyone affected in our hearts"in a post on X. "The state is working closely with local and federal authorities as the investigation unfolds," he wrote. "Please avoid the area." CNN has reached out to the Palm Springs Fire Department for more information. CNN's Josh Campbell contributed to this report. For more CNN news and newsletters create an account atCNN.com