Two friends of Boston bomber jailed

Two more friends of convicted Boston bomber Dzhokhar Tsarnaev were jailed on Friday for impeding the FBI investigation into one of the deadliest attacks on US soil since 9/11. A US judge sentenced Azamat Tazhayakov, a student from an affluent family in Kazakhstan, to three-and-a-half years for obstruction and conspiracy. In a separate hearing, Robel Phillipos, the son of an Ethiopian immigrant, was sentenced to three years for lying to the FBI.