how to get illegal code removed

After being terminated [edited by moderator] Sent a blackmail threat that he would post our confidential source code to Github if we did not pay him $2000 as a bonus.  We refused,  So today he has posted our code in violation of federal criminal law and out NDA.  Does anybody know how to ask Github to take this illegal post down?

@clayrankin1, your question is best answered privately.
I am going to create ticket on your behalf and lock this thread.
We will follow up with you in the ticket.
Thanks!