Investigation concludes in Pacifica pit bull mauling

PACIFICA, Calif.

Darla Napora, 32, died of massive blood loss and shock in August. Officers killed her two-year-old pit bull Gunner, when he escaped from the backyard during their investigation.

Officials say a necropsy on gunner didn't turn up any disease or condition that would explain the attack. The dog was apparently treated like a member of the family and had no history of violence.

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