Terror Attack in Boston

Terror hits one of America's most famous cities.

Three are dead and more than 140 people injured after two bombs exploded at the close of the Boston Marathon. We still don't know who is behind the attacks or how extensive the plans were, but there are reports several more explosive devices were found. The White House is calling it terrorism and President Obama says whoever is responsible will "feel the full weight of justice."

Boston police have made a point of saying they do not have a suspect in custody. There was reportedly a search of a town near Boston called Revere. The FBI is taking charge of the criminal investigation. Let's be extremely careful of speculation.

Other U.S. cities remain on high alert including New York and Washington.

There is a news conference at the Westin Copley Plaza this morning. Hopefully we will learn new details.

0930EST -- FBI press conference at The Westin Copley Plaza.

1000EDT -- FBI and NCTC brief House Intel Cmte. CLOSED / FNC TAPE STAKEOUT

We've got Fox team coverage including Molly Line and Rick Leventhal from near the finish line in Boston, Mike Tobin is at Massachusetts General Hospital, Bill Hemmer and Shepard Smith are near Copley Square. Julie Banderas, Catherine Herridge and Eric Shawn are also reporting on the terror attack and the side bars.

There are a few other news items:

The Dow plunged more than 250 points yesterday as gold continues a precipitous fall. We'll watch it closely today.

A U.S. chopper made a hard landing in South Korea training exercises. All 21 aboard were taken to local hospitals. Most have been released.

North Korea today is threatening South Korea with attacks though it is not clear why. So far, no signs a missile test is imminent.

A series of earthquakes rattled nerves in Oklahoma.

Jodi Arias trials resumes today after another day of bizarre testimony.

Clint Henderson is the Executive Producer for “Happening Now” and an avid traveler. Follow his adventures on Twitter, ClintPHenderson, and Instagram, clintpage1.