By CNN

Posted August 12, 2014

It’s been four days since a Ferguson, Missouri, police officer shot and killed teenager Michael Brown, and the public still does not know the name of the person who pulled the trigger.

Despite cries of a cover-up, there’s good reason for the silence, local officials say. Since the shooting Saturday, police have received death threats against the officer, and it’s spread from there, Ferguson Mayor James W. Knowles said Wednesday on CNN’s “New Day.”

“Hackers have tried to find personal information and display it online on social media, asking people to target myself, council members, the police chief,” he said. “The county police chief’s own home was put on Instagram, and people (were) asked to go there and assault him.”

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