UPDATED: Multiple people injured in Brooklyn subway shooting, explosion; police find several 'undetonated devices'

At least 10 people were shot and 6 others injured in a firearm and explosive attack inside a subway station in Brooklyn, New York, early Tuesday, and police reported that several undetonated devices were also located at the scene.

Amazingly, none of those injured are believed to have suffered life-threatening injuries, and as of Tuesday afternoon, the attack was not being considered an act of terrorism.

The incident occurred at the 36th Street and 4th Avenue station in Sunset Park at approximately 8:30 a.m., police said.

WNBC-TV reported that law enforcement officials are describing the suspect as a black male who is roughly 5 feet, 5 inches tall and weighing 180 pounds. He was reportedly wearing a gas mask and an orange construction vest at the time of the shooting.

The outlet added that law enforcement sources believe the suspect threw smoke canisters prior to opening fire on the crowd. Officers also believe they have recovered the suspect's gun and several more unused canisters and fireworks.

The gunman, however, is still at large and a manhunt remains under way, according to WABC-TV.

In a press conference Tuesday afternoon, NYPD Commissioner Keechant Sewell told reporters: "The suspect was in the train car, the shooting began in the train car. As the train was pulling into the station, the subject put on a gas mask. He then opened a canister that was in his bag and then the car began to fill with smoke. After that he began shooting."

Officials give 1st update on Brooklyn subway shootingwww.youtube.com

A witness to the incident told the New York Post the gunman fired off so many rounds that she "lost count." She added that she originally thought he was an MTA worker because of his clothing, but then she saw him drop "some kind of cylinder that sparked at the top."

The New York City Fire Department and other emergency medical responders quickly arrived on the scene to treat victims. Authorities believe many of the victims were struck by gunfire, while some others were hit by shrapnel.

The extents of the victims' injuries were not immediately clear, but photos and videos posted on social media showed several people bloodied from the gunfire and lying on the ground. Some appeared to be injured in their legs.

Local news outlets reported that the victims have been taken to nearby hospitals for further treatment.

Police have not yet offered more information regarding the undetonated devices but have confirmed that no active explosives remain on the scene.

This is a breaking news story. Check back for updates.