Update: Chattanooga Shootings Investigated as Act of Terrorism

Update: Friday, July 17
The U.S. Attorney in eastern Tennessee says the attacks on two military facilities in Tennessee is being treated as a terrorism investigation.

Bill Killian, the U.S. Attorney for the eastern district of Tennessee, said Thursday that the probe is being led by the FBI. Killian says investigators will "let the facts and the evidence lead us where it may."

In a news conference Friday, the Chattanooga police chief described how officers dragged a wounded colleague to safety in a gunfight with the shooter.

The FBI said the shooter had at least two long guns and a pistol used in the attacks. Some of his guns were purchased illegally. He was wearing a vest that allowed him to carry extra gun ammunition. Officials said the gunman was killed by authorities.

Authorities restated that they did not believe this incident represented any kind of continuing threat.

While authorities said they are investigating this incident as an act of terrorism they have not yet labeled it as such. They said it is being investigated this way to give it a higher priority than other crimes.

Thursday, July 16
Federal officials offered reassurances about public safety Thursday night in the aftermath of four Marines being shot to death in Tennessee. In a late-night briefing they said there was no additional threat to the general public.

President Barack Obama is promising a thorough and prompt investigation into the attack at two military sites that killed at least four Marines in Chattanooga.

Obama says it appears the attack was committed by a lone gunman, but that a full investigation is ongoing.

The president is calling the shooting a "heartbreaking circumstance." He says he's been briefed about the incident and has been in touch with the Defense Department to make sure military facilities are vigilant.

Obama spoke in the Oval Office just minutes after returning to Washington from a trip to Oklahoma. He was joined his counterterrorism and homeland security adviser and the FBI director.

The gunman, identified as Mohammod Youssuf Abdulazeez, 24, was killed after a shootout with police at the second facility. It was not immediately clear whether police killed him or he killed himself.

Muhammad Youssef Abdulazeez was believed to have been born in Kuwait, and it was unclear whether he was a U.S. or Kuwaiti citizen. He was living in Hixson, Tennessee, which is just a few miles across the river from Chattanooga.

The Chattanooga mayor says the killings of four military personnel are "incomprehensible."

Mayor Andy Berke said at a news conference Thursday "I want to say again, it is incomprehensible to see what happened and the way that individuals who proudly serve our country were treated," he said. "As a city, we will respond to this with every available resource we have."

A U.S. attorney says the incident is an "act of domestic terrorism."

U.S. Attorney Bill Killian made the comments Thursday during a news conference.

Law enforcement swarmed the house believed to belong to the man authorities say is responsible for the killings.

An Associated Press reporter saw officers with weapons drawn at the house and two females were led away in handcuffs.

The law enforcement presence came shortly after a news conference in which officials described the attacks.