Police say the suspect and victim are juveniles and students of Skyline High School.
The incident happened around 11:30 a.m. along the 12200 block of Skyline Boulevard.
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The victim was found suffering from a stab wound and was taken to a local hospital for treatment, police said.
Police are investigating to see if there's a connection between suspect and the victim.
ABC7 confirmed there was no lockdown in effect following the stabbing.
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