Update: This is being reported by CBS News but no word on a possible motive from authorities:

NEW: In Nov. 2016, FLL suspect walked into FBI office in Anchorage, claiming he was being forced to fight for ISIS, sources tell CBS News.

— CBS News (@CBSNews) January 6, 2017

Also there’s a mugshot:

Image of Fort Lauderdale Int'l Airport shooting suspect Esteban Santiago, law enforcement sources confirm: https://t.co/P6DXgTIdbY pic.twitter.com/e5UP9NEoqX

— CBS News (@CBSNews) January 6, 2017

Update: The Daily Beast highlights a Facebook post by Broward County Commissioner Chip LaMarca. Apparently the reason this happened at the baggage claim is that the shooter had the gun in a checked bag and retrieved it there:

The shooter was a passenger on a Canadian flight with a checked gun. He claimed his bag and took the gun from baggage and went into the bathroom to load it. Came out shooting people in baggage claim. There were 13 total shot, 5 dead, 8 transported to hospital.

Update: There were some reports circulating of a possible 2nd shooter. Now authorities say there is no confirmation of gunshots anywhere other than the terminal 2 baggage claim area.

#FortLauderdale airport shooting happened in baggage area, officials say. Five people killed; a gunman is in custody https://t.co/2pfyZCv2g2

— Sky News (@SkyNews) January 6, 2017

Update: Responses from the President-elect and Vice President-elect:

https://twitter.com/realDonaldTrump/status/817453219613917185

Our thoughts and prayers are with the victims, their families and our first responders in Fort Lauderdale, FL. https://t.co/0DutQItGvN

— Mike Pence (@Mike_Pence) January 6, 2017

Update: Senator Bill Nelson has named the shooter as Esteban Santiago. On CNN, Nelson said authorities seemed sure about the name but hadn’t verified the military ID yet:

.@SenBillNelson: Shooter's name is Esteban Santiago. Name reportedly found on military ID. No motive known. https://t.co/gYRrqG2JQN pic.twitter.com/FoXbqireLM

— Fox News (@FoxNews) January 6, 2017

Update: Witness says the man walked in and began randomly shooting people. Didn’t yell or say a single word while firing:

NEW: Airport gunman appeared to shoot randomly, witness says; he was "not screaming anything, not shouting anything" https://t.co/J54RiABFFl pic.twitter.com/NuoDaQ3HKk

— CBS News (@CBSNews) January 6, 2017

MORE: "He was just picking off things like target practice," eyewitness says of gunman at FLL airport shooting https://t.co/J54RiABFFl pic.twitter.com/HKhiPD3hHa

— CBS News (@CBSNews) January 6, 2017

Update: Broward County Sheriff’s Department confirms 5 dead and 8 injured in the attack:

Update: 5 ppl dead; 8 injured were taken to an area hospital.

— Broward Sheriff (@browardsheriff) January 6, 2017

[End update.]

A gunman opened fire at the Fort Lauderdale, Florida international airport. The Broward County Sheriff’s department tweeted there were “multiple” fatalities and eight injured people have been taken to the hospital. One subject is in custody.

Confirmed: Shooting at Fort Lauderdale -Hollywood International Airport with multiple people dead. One subject in custody.

— Broward Sheriff (@browardsheriff) January 6, 2017

Update: Eight people were injured and transported to an area hospital.

— Broward Sheriff (@browardsheriff) January 6, 2017

Former White House spokesman Ari Fleischer was in the airport when the attack happened and tweeted about it:

I'm at the Ft. Lauderdale Airport. Shots have been fired. Everyone is running.

— Ari Fleischer (@AriFleischer) January 6, 2017

The airport’s twitter account put out this message:

There is an ongoing incident in Terminal 2, Baggage Claim. Media availability is at the staging area.

— Fort Lauderdale-Hollywood Int'l Airport (FLL) (@FLLFlyer) January 6, 2017

Cell phone video that appears to show the baggage claim area immediately after the shooting has been broadcast by local a news stations:

https://twitter.com/chadushes1/status/817445683238158336

CBS News interviewed a man who was inside the airport and heard the shots:

NEW: "We heard the shots…popping shots," witness at Fort Lauderdale Int'l Airport tells CBSN https://t.co/J54RiABFFl pic.twitter.com/KgsL9hw2Ln

— CBS News (@CBSNews) January 6, 2017

MORE: Witness Mike Starobinsky describes seeing man "bleeding profusely" on lower level of Ft. Lauderdale airport https://t.co/J54RiABFFl pic.twitter.com/nuRyAURbRo

— CBS News (@CBSNews) January 6, 2017

CNN has an update from the Mayor:

Mayor says lone shooter is in custody following a shooting incident at Fort Lauderdale airport https://t.co/lAl4XsZARK pic.twitter.com/1QTaQXeH7p

— CNN (@CNN) January 6, 2017

This post will be updated as more information comes in.