Published: Oct 05, 2011 2:44 PM EDT

CUPERTINO, Calif. (AP) - Authorities say an employee has opened fire at a meeting at a Northern California quarry, killing two people and injuring four others.
    
KGO-TV reports that Santa Clara County sheriff's officials have confirmed the shooting happened early Wednesday at the Permanente Quarry in Cupertino. The suspect is reportedly not in custody.
    
Calls to sheriff's officials by The Associated Press were not immediately returned.
    
According to the Santa Clara County website, Permanente Quarry is a limestone and aggregate mining operation and cement plant located in the foothills above Cupertino.

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