Republican Trump says 'system is rigged' after Clinton email announcement
Donald Trump speaks at the Trump Soho Hotel in New York on June 22, 2016 (AFP Photo/Kena Betancur)

U.S. Republican presidential candidate Donald Trump attacked the decision by FBI Director James Comey to not recommend charges against Democrat Hillary Clinton for use of a private email server, saying on Tuesday the "system is rigged."

"Very very unfair! As usual, bad judgment," Trump wrote on Twitter soon after Comey's announcement. "FBI director said Crooked Hillary compromised our national security. No charges. Wow!"

(Reporting by Ginger Gibson; Editing by Frances Kerry)