Update 6:40 AM ET: The death toll has risen. The Istanbul governor says it now stands at 41.
Update 7:58 PM ET: The death toll has been corrected by Turkish officials. AP has confirmed the death toll to be 31 people. The death toll is anticipated to increase.
Update 6:53 PM ET: The death toll is now believed to be closer to 50 and initial indications suggest ISIS orchestrated the attack, according to what a senior Turkish official told AP.
Update 5:12 PM ET: At least 28 killed, 60 wounded, according to AP.
Here's what we know so far. This post will be updated as more details become available.
In addition to explosions, which allegedly occurred near a security checkpoint, there were reports of gunfire.
At least 10 people were killed in the Istanbul attack and at least 20 were injured, according to ABC News.
Two suspects reportedly blew themselves up, but it's not yet clear if any particular group is responsible.
Police reportedly fired at the suspects in an attempt to subdue them.
As of approximately 4 pm ET, all flights are on hold.
It is not yet known whether any of the victims were American citizens, but the State Department urges Americans in Turkey to contact their loved ones.
Turkey suffered a number of terror attacks in recent months, including in tourist areas, and US citizens in the country are advised to be cautious.
This is reportedly footage of the moment of the attack.
Citations: The Guardian