In the wake of the revelations about the violent nature of accused marathon bomber Tamerlan Tsarnaev, investigators in the Boston suburbs tell ABC News they are probing whether he may have been involved in an unsolved grisly triple homicide of a former roommate and two others. The murders took place around the tenth anniversary of the September 11 attacks.


"Generosity. That was my first mistake."
"Experience must be our only guide; reason may mislead us."
"Instagram is Twitter for people who can't read."