FBI chief on Benghazi probe: 'We will never stop'

(CNN) - FBI Director James Comey told a Senate hearing on Thursday the agency considers the investigation of the deadly Benghazi terror attack among its "highest priorities."

In response to questions from Sen. Kelly Ayotte, R-New Hampshire, Comey said the FBI still has "a lot of people working very, very hard on this. We are committed bringing to justice those responsible for the attack and the murder of our folks.