Abdulazeez followed a radical member of al Qaeda

The home where suspected gunman Muhammad Youssef Abdulazeez lived with his parents and sisters is shown Friday, July 17, 2015, in Hixson, Tenn.

Mohammod Abdulazeez, the man who shot and killed five servicemen in Chattanooga last week, was following a radical American member of al Qaeda online, according to ABC News.

ABC News reported that the FBI found evidence that in 2013 Abdulazeez was following Anwar al-Awlaki, a high-profile American al Qaeda cleric and recruiter. Abdulazeez conducted research for militant Islamist "guidance" on committing violence, U.S. officials told ABC News. FBI agents found the evidence in a search of Abdulazeez's cell phone and online activity, according to ABC News.

There's still no evidence, though, that Abdulazeez was motivated by ISIS to commit the shootings last week. ISIS used to be an al Qaeda affiliate in Iraq, but the two groups split recently.

photo Mohammad Youssef Abdulazeez smiles with his father, Youssef, on the Walnut Street Bridge in a photo taken earlier this year.