FBI finds no ties of Tennessee shooting suspect to international terror groups
FBI agents work the scene at the Armed Forces Career Center in Chattanooga, Tennessee July 16, 2015. REUTERS/Tami Chappell

The FBI said on Thursday it had found nothing that ties a man suspected of gunning down four Marines in Chattanooga, Tennessee, to an international terrorist organization.

At a news conference, the FBI said it was still looking for a motive behind the attack on two military facilities that also left three people wounded. The gunman, identified by federal authorities as Mohammod Youssuf Abdulazeez, was also killed.

An autopsy would determine the cause of the suspect's death, Edward Reinhold, special agent in charge of the FBI's Knoxville, Tennessee, division told reporters.

The Department of Defense will decide whether to release the names of the Marines killed, he added.

(Reporting by Frank McGurty and Victoria Cavaliere; Editing by Clarence Fernandez)