CHATTANOOGA, Tenn., July 16 (Reuters) - Four Marines were killed on Thursday by a gunman who opened fire at two military offices in Chattanooga, Tennessee, before being fatally shot in an attack officials called a brazen, brutal act of domestic terrorism.
The Federal Bureau of Investigation named the suspect as Mohammod Youssuf Abdulazeez, 24, but said it was too early to speculate on a motive for the rampage, which comes at a time when U.S. military and law enforcement authorities are increasingly concerned about the threat posed by "lone wolves" to domestic targets.
NBC News reported that Abdulazeez was a naturalized American who was born in Kuwait. U.S. law enforcement officials said they were investigating whether he was inspired by Islamic State or a similar group.
Islamic State had threatened to step up violence in the holy fasting month of Ramadan, which ends on Friday.
The extremist group, also known as ISIS and ISIL, claimed responsibility when a gunman in Tunisia opened fire at a popular tourist hotel and killed 37 people in June. On the same day, there was an attack in France and a suicide bombing in Kuwait.