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The FBI “can’t work on assumptions," said David Sundberg, assistant director in charge of the bureau's Washington field office.
FBI releases new video of DNC pipe bomb suspect →
“We urge anyone who may have previously hesitated to come forward or who may not have realized they had important information to contact us and share anything relevant," he said in an emailed statement on Thursday.
Hundreds of convictions, but a major mystery is still unsolved after Jan. 6 Capitol riot →
