Cesar Sayoc, 56, charged with federal crimes as one more package, 14 in all, is found.
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| Cesar Sayoc Jr. |
Possible reasons the pipe bombs didn’t explode.
The F.B.I. director, Christopher A. Wray, said that the bureau was still trying to determine if Mr. Sayoc’s bombs were “functional” but noted that they contained “energetic material” that could be dangerous. Mr. Wray said that the investigation was “active” and cautioned that there could be more bombs still undiscovered.