A bomb exploded near a reproductive health clinic in Palm Springs, California, BTA reported, citing Reuters. One person died in the blast, the city's mayor said.
The bomb was placed either in or near a vehicle. It was parked in front of the clinic when the bomb went off, Mayor Ron DeHarte said, adding that he could not confirm whether the deceased was a suspect in the blast.
"It appears (the explosion) was a deliberate act of violence," he said.
The Palm Springs Fire Chief said no suspect had been identified at this time.
The Federal Bureau of Investigation (FBI) said in a post on social media that it was investigating the explosion, with bomb disposal experts deployed to the scene.
ABC News, citing law enforcement sources and the facility, run by American Reproductive Centers, reported that at least five people were injured in the explosion.
Palm Springs is about 100 miles (161 km) east of Los Angeles.
The city of Palm Springs said in a post on Facebook that the explosion occurred just before 11 a.m. local time (9 p.m. Eastern time).
Photos posted online after the explosion showed the single-story building housing the clinic with a hole in one of the walls and a pile of debris on the street.
The fire department said several other buildings in the area were damaged, some significantly.
American Reproductive Centers, which has offices in at least three California cities, provides services such as in vitro fertilization, genetic testing and egg donation.