CONCORD (CBS SF) – A teenager playing video games at the home of two brothers Thursday afternoon was stabbed several times by one of the siblings, who then fled before contacting authorities a short time later to turn himself in, Concord police said.

Police responded about 2 p.m. to the stabbing report at an apartment in the 1400 block of Bel Air Drive and called for a helicopter to take the victim to a trauma center for his injuries.

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The suspect was taken into custody a few blocks away.

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Police say the reason for the stabbing is undetermined.

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