Investigators gave no motive for the alleged killing . Oscar Martinez once tweeted a photo of himself at a gun range . Nike pulls an ad featuring Pistorius and the word ` ` bullet '' Reeva Martinez tweeted something about her ` ` ' '' making her a target . Pistorius was arrested for assault in 2009 but the case was dropped , police say .
Oscar Martinez once tweeted a photo of himself at a gun range . Nike pulls an ad featuring Pistorius and the word ` ` bullet '' Reeva Martinez tweeted something about her ` ` ' '' making her a target . Pistorius was arrested for assault in 2009 but the case was dropped , police say .