Yahoo News would report in their article, “Shootings at Chattanooga military facilities leave 4 Marines, gunman dead; act called ‘domestic terrorism‘,” that:
A U.S. official told the Associated Press that Abdulazeez had not been on the radar of federal law enforcement before Thursday’s shooting.
But also added:
His father had been investigated several years ago for “possible ties to a foreign terrorist organization” and added to the U.S. terrorist watch list, according to a report in the New York Times, but that probe did not surface information about Abdulazeez, the paper said.
via Land Destroyer: FBI Tracked Chattanooga Shooter’s Family for Years.