At least 21 people injured in Tuesday's Brooklyn subway attack were treated at NYU Langone Health. 

There were at least 29 injuries reported, including 10 people who were shot.

Brooklyn DA Eric Gonzalez has said authorities are "committed to bringing the shooter to justice."

The attack happened Tuesday morning on a rush-hour subway train in Brooklyn. Police say a gunman in a gas mask and a construction vest set off a smoke canister before opening fire. 

Sixteen patients have been discharged out of the 21 patients who were treated, News 12 has learned.  

Four patients will be held overnight at the hospital, News 12 has learned.