Gunfire at a California park interrupted a family gathering, killing a 9-year-old girl and wounding three others, including a 6-year-old girl.

Sacramento police responded to Mama Marks Park Saturday afternoon in response to a call of shots fired.

Police don’t know if the drive-by shooting was gang-related, Fox 40 Sacramento reported.

The dead girl and the wounded girl were not identified by police.

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The other victims were an adult man and an adult woman, the station reported. They were also not identified.

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The woman was in critical condition, according to reports. The man and the 6-year-old girl were in stable condition.

Fox 40 quoted police spokesman Karl Chan as saying the shooting was “extremely tragic and emotional” to the family.

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“Detectives are conducting an extensive canvass of the area for witnesses and evidence,” police said in a news release. “This investigation is in the early stages and information is limited.”