FIRST ON CNN : Two were former participants in federal witness security program . TL;DR The FBI is investigating a possible terror plot against the New York City subway system that was foiled by an undercover agent who posed as a suicide bomber, officials said. NEW : The agency watchdog `` developed the interim report to help ensure that the Justice Department promptly and sufficiently addressed the deficiencies we found . '' Justice Department official says the pair were accounted for . Details emerge from interim Justice Dept . inspector general 's report .
FIRST ON CNN : Two were former participants in federal witness security program . TL;DR The FBI is investigating a possible terror plot against the New York City subway system that was foiled by an undercover agent who posed as a suicide bomber, officials said. NEW : Justice Department official says the pair were accounted for . Details emerge from interim Justice Dept . inspector general 's report .