Police in Florida have questioned a suspected gunman after five people were killed and eight injured in a shooting at Fort Lauderdale airport.
The suspect has been identified by police as 26-year-old Esteban Santiago, an Iraq war veteran.
Officials say they have not ruled out terrorism as a possible motive.
US media say the man may have been mentally disturbed. He reportedly said the government was controlling his mind and made him watch jihadist videos.
The attacker opened fire at the baggage claim area of Terminal 2 as passengers were collecting their luggage. Witnesses said he walked along the carousels and did not say anything as he shot people who were trying to run or hide.
He surrendered to police when he ran out of ammunition, witnesses added.