Mohammod Youssuf Abdulazeez was the gunman who opened fire on two military centers in Chattanooga, Tenn., on Thursday, killing four Marines and a Navy sailor and injuring two other people before being killed, the FBI said. Abdulazeez's motive remains unclear, although a federal prosecutor said he is treating the case as an act of terrorism. Here is what we know about Abdulazeez so far:
He had lived in Tennessee for years
Abdulazeez was 24 and had been a longtime resident of the Chattanooga area.
He was born in Kuwait and became a naturalized U.S. citizen, according to a federal source who asked not to be named because of the ongoing investigation.