Suspects' mother: 'This is a setup'

The Boston bombings suspects' mother, Zubeidat Tsarnaeva, defended her sons Friday.

"It's impossible for them to do such things," Tsarnaeva told the English-language Russian news channel RT. "I am really, really, really telling you that this is a setup."

Tsarnaeva's sons are suspects in the deadly Boston Marathon bombings. Her eldest son, 26-year-old Tamerlan Tsarnaev, was killed yesterday in a shooting in a suburb of Boston. Her youngest son, 19-year-old Dzhokar Tsarnaev, remains on the run Friday as thousands of law enforcement authorities cast a wide net that virtually shut down the Massachusetts capital amid warnings the man was possibly armed with explosives.

"My son would never keep it in secret," added the suspects' mother. "If there is anyone who would know it would be me... He would never hide it from me. But [there was] never, never ever even a word."

The mother went on to talk about her sons' upbringing in the United States.

"My youngest was raised from 8 years in America, and my oldest he was really, really properly raised in our house," said the mother. "Nobody talked about terrorism. Tamerlan got involved in religion like five years ago. He started following his own religious acts, and he never, never told me that he would be on side of jihad."

Zubeidat Tsarnaeva said that the FBI followed her son's online activity for three years.

"How could this happen? How could they - they were controlling every step of him, now they are saying this is a terrorist act?"