Christopher Sign, 45, was found dead in his home in suburb of Birmingham 

Police said they received 911 phone call just before 8:15am on Saturday 

Investigators found Sign's body when they arrived at his home in Hoover

Initial reports indicate that his death is being investigated as a suicide

In 2016, Sign broke story of tarmac meeting between Bill Clinton, Loretta Lynch

Ex-President Clinton met then-attorney general on tarmac of Phoenix airport

Lynch's Justice Department was investigating Clinton's wife, Hillary Clinton

Meeting forced Lynch to recuse herself from overseeing the investigation

Hillary Clinton was being investigated for use of a private email server for official communications during her tenure as secretary of state