A Massachusetts man is pleading not guilty to offering 500-dollars on Twitter to anyone who would kill an ICE officer.
Brandon Ziobrowski is accused of offering the bounty in July.
He was a arraigned in federal court in Boston and released until his next court date in October on the condition that he submit to random drug tests.
Prosecutors say Ziobrowski's tweets became more violent and threatening since he created his account in 2009, and that in February he began promoting violence against law enforcement.
(Photo credit FREDERIC J. BROWN/AFP/Getty Images)