Two of Dzhokhar Tsarnaev's roommates were arrested on charges of making false statements to investigators and conspiracy to obstruct justice, according to CNN.
It was also reported that the two students are from New Bedford, Massachusetts.
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Officials say wanted Moroccan man Younes Abouyaaquoub was the driver of the van which ploughed into pedestrians in Barcelona last week.
Big Ben will fall silent on Monday for renovations following a backlash from MPs over the proposed four-year timetable for the work.
Rain will push into the northwest, turning heavy and persistent in places