Manhunt for Boston Marathon bombers

An unidentified resident of Norfolk Street in Cambridge, Mass., talks with police. Two suspects in the Boston Marathon bombing killed an MIT police officer, injured a transit officer in a firefight and threw explosive devices at police during a getaway attempt in a long night of violence that left one of them dead and another still at large Friday, authorities said as the manhunt intensified for a young man described as a dangerous terrorist.
Michael Dwyer / Associated Press
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