Tamarec Tsarnaev

Suspect 2011 triple murder: Slain Boston Marathon bombing suspect Tamarec Tsarnaev is being eyed in connection with a triple-homicide in 2011 that included a former roommate.

Commissioner second attack: Boston Police Commissioner Ed Davis said that the marathon bombing suspects were likely planning a second attack.

Suspect 2011 triple murder: Slain Boston Marathon bombing suspect Tamarec Tsarnaev is being eyed in connection with a triple-homicide in 2011 that included a former roommate.

Commissioner second attack: Boston Police Commissioner Ed Davis said that the marathon bombing suspects were likely planning a second attack.