The shooting happened at 1:10 p.m. in a park in the Del Paso Heights neighborhood on the city's north side, and a woman, man and 6-year-old girl were the people injured, police said.
Police spokesman Officer Karl Chan told the Bee that a family was gathering at Mama Marks Park when a gunman drove up and shot them.
The 9-year-old girl died at the scene, the Bee reported. Police said the 6-year-old girl is in stable condition, and the woman is in critical condition.
Police told the Bee that a man had taken himself to a hospital, also suffering a gunshot wound. He is in stable condition, police said.
Chan told the Bee that the site of the shooting is “a very emotional scene.”
Officers are investigating a potential gang connection to the shooting, Chan told the Bee.
There is no information on a suspect or suspects, police told the newspaper and the TV station.
On Sept. 11, 2018, 3-year-old Azalya Anderson died after she was hit by a stray bullet, the Bee reported. A bullet fired from the street struck her in her living room.