CNN The Situation Room April 16, 2013 22:26:00
And the police commissioner was asked about this, are you confident about this plan, did you have lapses in security at the finish line. one of the things investigators are now looking at is you have a larger crowd packed in there when the elite runners cross. and then the crowd shifts a little bit. and this is well after that, about two hours after the elite runners cross. there's a more fluid situation, people are moving about. one of the questions is as the crowd shifts, and as the crowd changes and the pressure is off, did you have your everyday marathoners cross, did the security people l...
Source: archive.org