(FOX NEWS) WASHINGTON –  One of three college students arrested Wednesday in the Boston Marathon bombings case was allowed to return to the United States from Kazakhstan in January despite not having a valid student visa, a federal law enforcement official told The Associated Press.

Authorities charged the student — a friend and classmate of one of the men accused of setting off the deadly explosions — with helping after the attacks to remove a laptop and backpack from the bombing suspect’s dormitory room before the FBI searched it.

The government acknowledged that U.S. Customs and Border Protection was unaware that the student was no longer in school when he was let back into the United States.

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