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PROGRAMMING NOTE: Friday's 'Y&R' Will Air At 2:05AM Saturday & 'B&B' Will Air At 3:05AM Saturday On KCBS

More Evidence About Tamerlan Tsarnaev's Alleged Role In Bombing Surfaces

As more evidence surfaces that suggests older brother Tamerlan Tsarnaev was the driving force behind the Boston Marathon bombings, people are wondering if the FBI should have paid more attention to him. Dave Bryan reports.