Jurors in the Boston Marathon bombing trial heard testimony on Friday from Dun Meng, who made a dramatic escape after his car was hijacked by bombing suspect Tamerlan Tsarnaev.
Juliette Kayyem, foreign affairs columnist for the Boston Globe, and a former homeland security official, says there are many unanswered questions in the case.
Tamerlan Tsarnaev's body awaits burial but the family is having trouble finding an Islamic center to conduct the last rites. Marco Werman speaks with Shahina Siddiqui, president of the Islamic Social Services Association in Canada about what's involved.
William Plotnikov was a Russian Canadian who converted to Islam and joined an insurgency in the republic of Dagestan. Plotnikov was killed last year in a raid.He may have been in contact with deceased Boston Marathon bombings suspect Tamerlan Tsarnaev.
Mikhail Allakhverdov is the man called Misha, who members of the Tsarnaev family say must have been responsible for radicalizing their sons, before they launched their attack on the Boston Marathon. But in an interview recently, he denied having anything to do with that.
US officials tell news outlets that Tamerlan Tsarnaev had been on two databases of potential terrorists for at least 18 months prior to the Marathon bombings.
Laure Mandeville is now chief US correspondent for the Le Figaro. She came to Boston over the weekend to speak with members of the Chechen community here, and to friends and neighbors of Boston bombing suspects Dzhokhar and Tamerlan Tsarnaev.
Whether Boston bombing suspect Tamerlan Tsarnaev reached out to insurgents during his six-month stay in the Caucasus region last year is a key question for US investigators right now.