BANFIELD: Four weeks ago today, there were two bombs that went off and changed people's lives forever at the Boston Marathon. I was in Boston to cover that terrible terrorist attack. Three people were killed in that attack, two lovely young women and a little boy, all of them spectators at the event, who lost their lives that day. We also want to remember the officer who was gunned down by the alleged suspects in this crime. Today, two brothers, also victims of this crime, each who had a leg amputated after the bombings, spoke out about what they have been through. Here's what one of them had to say.</s>PAUL NORDEN, BOSTON MARATHON BOMBING SURVIVOR: Had a couple bad days, but with all the support and, like, you know, our family's here constantly. It's all good. I'm ready to move on. I feel great. I feel like myself, it's just a different normal, you know? But it's exciting to know I'm going home real soon.</s>BANFIELD: Wow. Going home real soon. All of this as there are still questions about whether law enforcement could have done something to stop the bombers before they acted. And now a law enforcement official tells CNN that Russia withheld key details about Tamerlan Tsarnaev back in 2011 when Russia first told the United States about his possible extremism, details that the source says could have altered the course that authorities followed. The source also says that Russia didn't tell the United States about some text messages from Tsarnaev to his mother expressing his desire to join a militant movement. In the meantime, Tamerlan Tsarnaev was finally buried last week after a month of people refusing to take his body. And his brother is still in prison awaiting a trial for all of these allegations.
Latest on the Boston Bombing Investigation.