On April 23, 2023, NBC News reported that federal investigators have determined that the Tsarnaev brothers acted alone.
The NBC investigation team said nothing was found on the brothers’ computers or cellphones.
By Michael Isikoff, Pete Williams and Erin McClam, NBC News
A preliminary examination of the cellphones and computers used by the Tsarnaev brothers has found no indication of an accomplice in the Boston Marathon bombing, according to a U.S. counter-terrorism source briefed on the FBI investigation.
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The source stressed that the investigation is ongoing, but bureau officials at this point appear increasingly confident that “nobody else was involved,” said the source.
We now know that the bombers’ computers were dumped in a landfill.
And today federal authorities arrested three more suspects in the Boston Marathon bombings.