Evening Buzz: More Explosive Devices Shipped?

[cnn-photo-caption image= http://i.cdn.turner.com/cnn/2010/US/10/29/security.concern/t1larg.toner.white.cnn.jpg caption="Authorities say this was the device found in Dubai that was to be shipped on a FedEx flight to the U.S." width=300 height=169]

Maureen Miller
AC360° Writer

We're following new developments on the suspicious packages found overseas that were bound for Jewish places of worship in Chicago. Pres. Obama called the discovery "a credible threat against our country."  The devices "apparently contain explosive material," he added during an afternoon news conference at the White House.

Tonight the credible threat is possibly still ongoing. There are reports of at least 13 other packages that could have been sent. Due to that possibility authorities have checked cargo planes and delivery trucks in several cites, including Philadelphia and Newark, New Jersey.

As for the two devices found, a U.S. official tells CNN they likely contained the explosive compound PETN. That's what the accused "underwear bomber", Umar Farouk AbdulMutallab, allegedly used aboard a flight as it approached Detroit, Michigan last Christmas.

The two devices found overseas in this case were sent from Yemen.  One was found in Dubai, in the United Arab Emirates, before it was put on a FedEx flight to the U.S.  The other was found at an airport in Great Britain.

We'll give you a timeline of how this plot was foiled and talk about who may be responsible tonight on 360°.

We'll also talk with Dr. Phil McGraw about the anti-gay rant on Facebook by Clint McCance. Does Dr. Phil buy his apology? McCance said he's resigning from the Midlands School Board. Dr. Phil has some tough words for McCance.

Join us for these stories and much more starting at 10 p.m. ET. See you then.