Social networking giant Facebook played a role in catching the teenage killers of 12-year-old Autumn Pasquale. The mother of Justin and Dante Robinson alerted police after she read a message about Autumn on one son's Facebook page. It isn't clear what the message said.

Another Facebook message -- this one from Autumn's older brother, A.J. read: 'I know u wont see this but I'm just letting u know that I am coming for u next time I see ur face or ur brother donte. I'm kicking ur asses.'

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