The Marine Corps has identified the four men killed in an attack on military facilities in Chattanooga, Tennessee. He was named by the Federal Bureau of Investigation as Mohammad Youssuf Abdulazeez, 24. The official spoke on the condition of anonymity because the person was not authorized to speak publicly since the investigation was still ongoing.

Federal authorities said they are investigating the possibility it was an act of terrorism, but have no evidence yet that anyone but a lone gunman was involved.

But sources close to the case said authorities are looking into a trip he made to the Middle East previous year, including a period spent in Jordan.

The dead were identified Friday by the Marines as Gunnery Sgt.

But the flag Sergeant Thomas Sullivan fought to protect waves valiantly in front of his family’s Springfield bar and restaurant for visitors like family friend Kit Deblin.

Holmquist enlisted in the military in January 2009 and had been serving as an automotive maintenance technician, completing two deployments in Afghanistan.

The entire Navy Reserve Force extends its deepest sympathies to the families of the United States Marines who were tragically killed at Navy Operational Support Center Chattanooga.

“Sgt. Sullivan dedicated his life in fearless service to his country”, Sarno said, “and to see it end under such tragic circumstances is heartbreaking”.

Military recruiters are typically unarmed.

The defence department said today that the general security level had not been raised at military installations around the country in the wake of the shooting, but that individual station commanders might take added precautions.

The Marine Corps said Friday it would focus its priorities on supporting the families of those slain on Thursday.

Abdulazeez was killed in the incident and three other people were injured.

Abdulazeez, who died at the scene, used at least two long guns and one handgun in the attack. “Muslims are actually peaceful”, a 17-year-old Yasmeen Abdulazeez told the Chattanooga Times Free Press in 2010.

Abdulazeez was reportedly born in Kuwait and had Jordanian citizenship, but was also a naturalised USA citizen. Abdulazeez graduated from the University of Tennessee at Chattanooga with a degree in engineering. Grantsburg High School Principal Josh Watt, who was one of Holmquist’s football coaches, remembers the day his former cornerback showed up, the pride in his accomplishment apparent.

“He was a good kid…”

One of the childhood friends said Mohammod’s family life was good and called it “a happy home”. “I’ve never had any kind of conflict with them”.

U.S. law enforcement officials said they were investigating whether he was inspired by Islamic State or a similar group.

Some of the gun purchases were legal and some were not, FBI agent Ed Reinhold said at a news conference Friday.