Earlier, ABC News reported on what the NYPD deemed a credible tip that 19 operatives have been deployed to New York to place bombs in the subway. ABC says the tip stretches all the way to Iraq, saying that when three Iraqis were arrested several days ago during a raid by a joint FBI-CIA team, one of those arrested disclosed the threat. Because it slipped out during the arrest, the plot was deemed credible. The 19 operatives were reportedly to place improvised explosive devices in the subways using briefcases. The police are deploying additional officers, dogs and heavy weapons teams in subways and commuter rail terminals, sources said. Department of Homeland Security sources told ABC they are very doubtful the threat information is credible. On average, some 4.5 million commuters use New York’s subway system daily.