California office building shooting: 9-year-old boy among 4 killed, gunman knew victims, police say

ORANGE, Calif. — A gunman killed four people, including a 9-year-old boy, and injured a fifth in an apparently targeted shooting Wednesday at a California office complex.

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Authorities identified the suspect Thursday as Aminadab Gaxiola Gonzalez, 44. Officials said he had business or personal relationships with each of the victims shot on Wednesday, including the 9-year-old boy, who was the son of one of the other victims.

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