Update 1:23pm: The shooter has yet to be caught. He is described as a black male, about 5'5" and 175 pounds. New York City Mayor Eric Adams addressed the situation via video statement as he is currently in quarantine.

Update 12:21pm: At a press conference officials said 10 people are being treated for gunshot wounds, two people are in critical condition. A total of 16 people are being treated for injuries related to the shooting.

Update 11:31am: Police have reportedly cleared additional areas surrounding the subway as they remove what may be an explosive device.

Update 11:21am: The New York Post reports the shooter was wearing a gas mask when he opened fire and set off some type of smoke device. A press conference is expected to begin before noon.

Update 10:47am: Video just coming in of a subway car stopping and frantic passengers running out, smoke can be seen at the scene.

Update 10:34am: Schools in the area are on lockdown,

Update 10:32am: Word is the shooter was dressed in an MTA uniform, 5 were shot, no fatalities reported

There are reports that 5 people were shot, 13 were injured when someone opened fire at a Brooklyn subway station around 8:30am Tuesday.

NYPD, FBI, Homeland Security and ATF are hunting for the shooter, who apparently escaped. Witnesses say the man also dropped a device at the scene, there is speculation that it could be an explosive device.

See 20 Ways America Has Changed Since 9/11

For those of us who lived through 9/11, the day’s events will forever be emblazoned on our consciousnesses, a terrible tragedy we can’t, and won’t, forget. Now, two decades on, Stacker reflects back on the events of 9/11 and many of the ways the world has changed since then. Using information from news reports, government sources, and research centers, this is a list of 20 aspects of American life that were forever altered by the events of that day. From language to air travel to our handling of immigration and foreign policy, read on to see just how much life in the United States was affected by 9/11.