The mother of the Boston Marathon bombing suspects was placed on a CIA terrorist watch list 18 months before the deadly attack, and now Zubeidat Tsarnaev is officially a "person of interest" in the investigation of the massacre, Breaking Celebrity News has learned.

Two U.S. lawmakers revealed on Friday that investigators have traveled to Dagestan, Russia, to learn more about Dzhokhar and Tamerlan's mom from close associates, and that her name was first added to the federal terrorism database in 2011, reported Fox News.

With one son dead and the other currently imprisoned at the Federal Medical Center Devens near Boston, Zubeidat caused outrage earlier this week in a bizarre news conference when she claimed the blast that killed three people and wounded 264 was a hoax and "a show."

Zubeidat became increasingly militant in her Muslim faith around the same time her oldest son Tamerlan drastically converted to Islam, becoming a focus of the classified intelligence database Terrorist Identities Datamart Environment (also known as TIDE) at the CIA's request, and investigators now suspect she helped him on the road to radicalism — and ultimately to mass murder.

"She is a person of interest that we're looking at to see if she helped radicalize her son, or had contacts with other people or other terrorist groups," Rep. Dutch Ruppersberger, D-Md., the top Democrat on the House Intelligence Committee, told reporters.

Rep. Michael McCaul, R-Texas, who chairs the House Homeland Security Committee, went on to reveal that the mourning mother may have encouraged the 26-year-old suspect, who was killed in a shoot out with police last week, to pursue Islamic extremism.