May 31, 2015 - The FBI reportedly begins an informal investigation into Clinton’s emails.

In Email/Dossier Investigations, Original Thompson Email Timeline by admin

In September 2016, it will be revealed that the FBI’s Clinton email investigation formally began on July 10, 2015. However, according to account by CNN in August 2015, the FBI had already begun informally investigating Clinton’s emails in late May 2015. (CNN, 8/20/2015)