U.S. bomb scares: What we know so far about attempted attacks on Clinton, Obama, CNN and others

All of the parcels listed Congresswoman Debbie Wasserman-Schultz’s Miami-area office as the return address. More: Authorities eye Florida in hunt for source of suspicious packages, as security officials worry danger 'not over'

Time Warner Center in midtown Manhattan, where CNN's New York offices are located, was partially evacuated Thursday night when the New York Police Department responded to reports of a pair of unattended packages. Those sent to Mr. Soros, Mr. De Niro and former Central Intelligence Agency director John Brennan – care of CNN’s Manhattan headquarters – reached their destinations but were flagged by the recipients, who called authorities. Here's a breakdown of everything we've learned all week:

How many packages have been sent so far? Democratic U.S. Rep. Maxine Waters: Two suspicious packages: one intercepted at a congressional mail-screening facility in Maryland and a second one found at a postal facility in Los Angeles. • Former CIA Director John Brennan, sent to CNN’s offices in New York City
• Florida's Democratic Rep. Debbie Wasserman Schultz (a package discovered at her office was addressed to former U.S. Attorney General Eric Holder)
• Billionaire George Soros, in the mailbox at his home in Bedford, New York
• Former Vice President Joe Biden; two packages were intercepted at Delaware postal facilities

Will there be more suspicious packages? Two law enforcement officials said Thursday that investigators have been increasingly focused on the mail streams in and out of Florida, largely since the device addressed to Holder was recovered when it was re-routed back to the return address of Wasserman Schultz.
The FBI is investigating two packages found at postal facilities in Delaware, sent to former Vice President Joe Biden.