Boston bombings suspect 'had no visa'

One of three college students arrested in the Boston Marathon bombings case was allowed to return to the US from Kazakhstan in January despite not having a valid student visa.

The authorities charged the student – a friend and classmate of one of the men accused of setting off the pair of deadly explosions on April 15 – with helping to remove a laptop and backpack from the suspect’s dormitory room after the attacks and before the FBI searched it.