On October 3, 2016, FBI agents seized the computer and mobile devices of former Congressperson Anthony Weiner (D) as part of an investigation into him allegedly sending sexual text messages to an underaged girl. FBI agents soon came to believe that thousands of emails on his computer were actually sent or received by his wife and top Clinton aide Huma Abedin and thus might be relevant to the recently closed FBI Clinton email investigation.
According to CNN on October 31, 2016, “By mid-October, [FBI Director James] Comey learned investigators in the Weiner case might have found something that could have an impact on the now-closed probe into Hillary Clinton’s private email server, according to one law enforcement official. Comey was told investigators were still trying to figure out how many emails existed and their pertinence to the Clinton probe.”
Comey will then be given a full briefing with updated information on October 27, 2016. Based on that briefing, he will send a letter to Congress the next day announcing that he is reopening the investigation due to the new evidence. (CNN, 10/31/2016)