Wednesday April 24, 2013 Happening Now - Terror Dominates Headlines

We're learning much more about the brothers who allegedly carried out the horrific Boston Marathon bombing as the number of casualties keeps rising.

Molly line reports today that the older brother Tamerlan Tsarnaev, killed in a shootout with police, came under the influence of a radical Muslim convert named Misha. Tamerlan's trip to Russia did set off alarm bells, but it wasn't apparently followed up.

Meantime, new questions are being asked about whether federal agencies failed to communicate as they take a closer look at Tamerlan and Dzhokhar. Dzhokhar remains hospitalized but is reportedly cooperating with police.

The New York Times today reporting the pair were motivated by extremist Islamic beliefs, but that they were likely acting alone. The fear is that the brothers could represent a new threat of angry and alienated young men using the internet to concoct terror plots.

Catherine Herridge reporting on the investigation.

A suspect in the Canada terror plot to blow up a Canadian passenger train on its way to New York from Toronto will be in court today. At another court appearance in Montreal yesterday, 30-year-old Chiheb Esseghaier rejected the allegations against him and rejected a court-appointed attorney. Esseghaier and 35-year-old Raed Jaser are accused of plotting with Al Qaeda elements inside Iran on the attack.

Charges have been dropped against a man in Mississippi who'd been accused of sending Ricin-laced letters to President Obama and others. He may have been the victim of a framing. Another Mississippi man's home was searched, but that man also denies sending the letters.

Homeland Security Secretary Janet Napolitano says the immigration reform bill would actually improve security because it helps law enforcement know who's in the country.

Jennifer Griffin has more on a scathing Republican report on the Benghazi terror attack, and former Secretary of State Hillary Clinton's role in the aftermath.

Flooding continues unabated along the Mississippi and Illinois Rivers. Maria Molina and Rick Reichmuth reporting.

John Roberts has an update on a frightening outbreak of bird flu.

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