CNN Anderson Cooper 360 May 23, 2013 00:28:00
Good evening, everyone. cnn has just confirmed that authorities are now making a direct connection between the dead boston marathon bombing suspect, tamerlan tsarnaev, and the triple homicide back in 2011 that killed one of tsarnaev's close friends. it cams off an acquaintance reportedly confessed to take part before authorities say he attacked and was shot dead by the fbi agent who was interviewing him. a lot of bizarre developments in this story. susan cantyotty joins us now. what have you learned? . >> we have learned that, as you indicated, boston marathon suspect, tamerlan tsarnaev, playe...