3 more detained in Boston attack

(CNN) — At least two of three additional suspects arrested Wednesday in the Boston Marathon bombing probe face obstruction of justice charges, a federal law enforcement source said.

Boston police announced the arrests Wednesday morning, adding that there was “no threat to the public.”

Two students from New Bedford, Massachusetts, have been arrested on charges of making false statements to investigators and conspiracy to obstruct justice, according to a federal law enforcement source with firsthand knowledge of the investigation.

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