A 13-year-old girl has been arrested following the fatal shooting a 16-year-old boy in Los Angeles County, California, police have said.

Officers responded on Sunday about 5pm to a report of a shooting in the city of Pomona.

They found a teenage boy suffering from a gunshot wound.

He was pronounced dead at the scene after firefighters arrived.

A motive for the crime is as yet unknown, police said.

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Pomona Police Department said in a statement: "Due to the nature of the incident, investigators from the Pomona Police Department's Major Crimes Unit responded to the scene and initiated an extensive investigation.

"During the course of their invest

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