A law enforcement official tells CNN that investigators believe Tamerlan Tsarnaev - the bombing suspect who died after a shootout with police - accessed al Qaeda's English language magazine "Inspire" on a computer in the apartment he shared with his wife, Katherine Russell.
That magazine contained instructions on how to make a bomb.
Joe John is in Boston.
How did an 82-year-old nun and couple of peace activists make their way into one of the most secure nuclear facilities in the country with flashlights and a wire cutter?
The three are now facing up to 20 years in prison, but their act of defiance is shedding light on just how easy it is to break into a nuclear plant.
David Mattingly has the story OutFront.
Democratic Senator Chuck Schumer predicts that terrorist's will have a gun factory in their garage after the world's first 3-D-printed handgun was successfully fired in Texas.
Gun creator, Cody Wilson, fired the weapon - which he calls "the Liberator." A weapon made using an $8,000 3-D printer - and according to Wilson, less than $60 in other materials.
The ammunition is a standard 38 caliber bullet used in some handguns. Wilson has uploaded the blueprint and design for others to follow too.
Erin Burnett spoke with Sen. Schumer and asked him if technology will always be ahead of the law.
New allegations coming out Monday that the U.S. military could have done more in the aftermath of the attacks on the U.S. consulate in Libya.
That attack on September 11th last year killed ambassador Chris Stevens and three other Americans.
This information comes as the House oversight committee is strategically releasing excerpts from their key witnesses as they promise a blockbuster hearing on Wednesday.
Outfront tonight: Tim Clemente, a former counterterrorism FBI agent who worked the investigations into the Africa embassy bombings and the USS Cole. And Bob Baer is a former CIA operative and CNN contributor.