A mass shooting in Brooklyn on Tuesday morning injured 16 people, including 10 who were shot. It is not being investigated as terrorism, NYPD Commissioner Keechant Sewell said at a press briefing. The "active shooting incident," which occurred on the N subway line at 36th Street, was committed by a man who donned a gas mask and opened fire, Sewell said.

Credit: John Roca

Alleged subway shooter Frank R. James is led out of the 9th Precinct in Manhattan by members of the NYPD and FBI. James, 62, is charged with shooting multiple people as the train they were riding on pulled into the Sunset Park station located at 36 Street and Fourth Ave in Brooklyn.

Credit: John Roca

Alleged subway shooter Frank R. James is led out of the 9th Precinct in Manhattan by members of the NYPD and FBI. James, 62, is charged with shooting multiple people as the train they were riding on pulled into the Sunset Park station located at 36 Street and Fourth Ave in Brooklyn.

Credit: Jeffrey Bachner

New York City Police and Fire Department officials on the scene of the shooting at a Subway station in Brooklyn.

Credit: Jeff Bachner

NYPD officers await arrival of the Bomb Squad after finding the U-Haul van believed to be driven by the suspect who shot several people earlier in the subway in Brooklyn.

Credit: AP/John Minchillo

Emergency personnel gather at the entrance to a subway stop in Brooklyn on Tuesday.

Credit: AP

Law enforcement at the scene of a shooting at a subway station in Brooklyn.

Credit: AP

This still image provided by WABC shows law enforcement gathering at the scene of a shooting in Brooklyn.

Credit: JUSTIN LANE/EPA-EFE/Shutterstock/JUSTIN LANE/EPA-EFE/Shutterstock

New York City Police and Fire Department officials on the scene of the shooting at a Subway station in Brooklyn.

Credit: AP/John Minchillo

New York City Police Department personnel gather at the entrance to a subway stop in Brooklyn.

Credit: AFP via Getty Images/TIMOTHY A. CLARY

Members of the New York Police Department patrol the streets after a rush-hour shooting at a subway station in Brooklyn.

Credit: Getty Images/Spencer Platt

Police and emergency responders gather at the site of a reported shooting of multiple people outside the 36th Street subway station in Brooklyn.

Credit: TNS/Spencer Platt

Police and emergency responders gather at the site of a reported shooting of multiple people outside of the 36th Street subway station in Brooklyn.

Credit: Getty Images/Spencer Platt

Onlookers watch as police and emergency responders gather at the site of a reported shooting of multiple people outside of the 36th Street subway station in Brooklyn.

Credit: Getty Images/Spencer Platt

Police and emergency responders gather at the site of a reported shooting of multiple people outside of the 36th Street subway station in Brooklyn.

Credit: AP/Kevin Hagen

Officers with bomb-sniffing dogs look over the area after a shooting on a subway in Brooklyn.

Credit: AP/Will B. Wylde

This photo provided by Will B Wylde shows a person being aided outside a subway car in Brooklyn.

Credit: AP/Will B. Wylde

In this photo from a social media video, passengers run from a subway car in a station in the Brooklyn borough of New York.

Credit: AP/Will B. Wylde

In this photo provided by Will B Wylde, a person is aided in a subway car in the Brooklyn borough of New York.

Credit: AP/Will B. Wylde

In this photo provided by Will B Wylde, a person is aided outside a subway car in the Brooklyn borough of New York.

Credit: AP/Will B. Wylde

In this photo from a social media video, passengers run from a subway car in a station in the Brooklyn borough of New York after a gunman filled a rush-hour subway train with smoke and shot multiple people.

Credit: Jeff Bachner

NYPD Commissioner Keechant Sewell speaks during a news conference after several people were shot by a gunman who detonated a smoke bomb at the 36th Street and Fourth Avenue subway station in Brooklyn.

Credit: Jeff Bachner

Multiple agencies respond to investigate after several people were shot by a gunman who detonated a smoke bomb at the 36th Street and Fourth Avenue subway station in Brooklyn.

Credit: Jeff Bachner

Multiple agencies respond to investigate after several people were shot by a gunman who detonated a smoke bomb at the 36th Street and Fourth Avenue subway station in Brooklyn.

Credit: Jeff Bachner

Multiple agencies respond to investigate after several people were shot by a gunman who detonated a smoke bomb at the 36th Street and Fourth Avenue subway station in Brooklyn.

Credit: Jeff Bachner

Gov. Kathy Hochul speaks during a news conference after several people were shot by a gunman who detonated a smoke bomb at the 36th Street and Fourth Avenue subway station in Brooklyn.

Credit: John Roca

Active shooter scene where a number of people shot and four undetonated devices discovered in subway station at 36 street and Fourth ave in Sunset park., Brooklyn

Credit: Jeff Bachner

NYPD Emergency Service Unit officers search a U-Haul van on Kings Highway in Gravesend, Brooklyn.

Credit: John Roca

The scene where a number of people were shot in a subway station at 36th Street and Fourth Avenue in Sunset Park, Brooklyn .

Credit: Jeff Bachner

NYPD Emergency Service Unit officers arrive to search a U-Haul van on Kings Highway in Gravesend, Brooklyn. The van is believed to be linked to the suspect in the earlier shooting on the subway.

Credit: Jeff Bachner

NYPD Emergency Service Unit officers search a U-Haul van on Kings Highway in Gravesend, Brooklyn.

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