Enter the email address and password associated with the BlackBerry ID then click Sign In. If a BlackBerry ID account does not already exist, click Don't have a BlackBerry ID? then follow the step-by-step instructions to create the account.
From the My Device section, click Flag as Stolen.
From Flag as Stolen, enter the BlackBerry ID password then click Flag as Stolen.
From the Flag as Stolen screen, view the progress then click Close.