SOP in many states. Think of the alterative (Zimmerman FL case) where witnesses changed their story after the media reported.
7/21/2012 — FBI theater attack warning issued on May 17, 2012
http://www.youtube.com/watch?v=O9aVMfYR8to
7/21/2012 — FBI theater attack warning issued on May 17, 2012
http://www.youtube.com/watch?v=O9aVMfYR8to