ANNOUNCER: This is CNN breaking news.</s>DON LEMON, CNN HOST: It is 11:00 p.m. here on the East Coast. Our breaking news as four marines are dead and a female sailor seriously wounded in two separate attacks at military centers in at Chattanooga, Tennessee. Authorities say the shooter is 24-year-old Muhammad Youssef Abdulazeez. He is also dead. This is CNN TONIGHT. I'm Don Lemon. Law enforcement officials say it is too soon to know the motive for the fatal rampage, but they're looking at everything from terrorism to a simple criminal act. The justice department, the FBI holding a news conference this hour in Chattanooga. We'll bring that to you as it happens here. CNN's justice reporter Evan Perez is in Washington for us gathering more information. Evan, I want to go to you and I want to ask you about this FBI briefing. It is going to happen at any moment. Are your sources telling you anything about what they're going to talk about?</s>EVAN PEREZ, CNN JUSTICE CORRESPONDENT: Don, we expect that this is mostly to reassure the community there in Chattanooga. I'm sure this is something that they have never seen anything like this before. And so, one of the things that the justice department and the FBI wanted to do is provide as much of an update as they can to the local community to let them know where this investigation stands. We know that they've spent the better part of today just trying to understand more about the shooter. And they've gotten a lot of information. They don't yet know what his motivation is. They haven't yet established the motivation.
Two Military Centers In Chattanooga Attacked. 