WASHINGTON (AP) — The FBI made an arrest on Thursday in its nearly 5-year-old investigation into who placed pipe bombs in Washington on the eve of the Jan. 6, 2021, riot at the U.S. Capitol.

The arrest marks the first time investigators have settled on a suspect in an act that had long vexed law enforcement, spawned a multitude of conspiracy theories and remained an enduring mystery in the shadow of the dark chapter of American history that is the violent Capitol siege .

The arrest took place Thursday morning, and the suspect is a man, a law enforcement official told The Associated Press. He was arrested in Virginia, according to another person familiar with the matter. No other details were immediately available, including the charges the man might face. The people who described t

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