http://www.dailymail.co.uk/news/arti...-interest.html

The mother of the Boston Marathon bombing suspects was put on the CIA terrorist watchlist 18 months before the tragedy, officials said on Friday as lawmakers revealed Zubeidat Tsarnaev is now considered a 'person of interest' in the federal investigation into the attack.

Unnamed officials have also reveled that the CIA asked for the Boston terror suspect and his mother to be added to a terrorist database in the fall of 2011, after the Russian government contacted the agency with concerns that both had become religious militants, according to officials briefed on the investigation.

About six months earlier, the FBI investigated Tamerlan Tsarnaev and his mother, Zubeidat Tsarnaeva, also at Russia's request, one of the officials said.