Gunfire erupted on a moving New York City subway train during rush hour Tuesday morning, wounding at least five people and injuring eight others, according to authorities.

According to officials, the attack prompted a massive law enforcement response in Brooklyn’s Sunset Park neighborhood, as well as a manhunt for the perpetrator.

According to law enforcement sources, shots rang out inside a subway car as a Manhattan-bound N train approached the 36th Street Station.

According to the sources, passengers, including some of the injured, stumbled off the train, with a few of them boarding a R train across the platform to get away. According to the sources, at least eight people were injured in the frantic rush to get away from the N train, in addition to the five people shot.

At about 8:30 a.m., a man, possibly dressed in MTA garb, was seen throwing a device in the subway station before opening fire, according to law enforcement sources.

Several undetonated devices were discovered at the scene, according to the FDNY. However, the NYPD stated that no “active explosive devices” were discovered right away. According to NBC New York, what were thought to be explosive devices “might just be debris,” according to law enforcement sources.

According to sources, police were looking for a man who was about 5-foot-5, 180 pounds, and wore a gas mask when he allegedly opened fire with a handgun. Following the attack, several commuters posted images of bloodshed and smoke in the Brooklyn subway station.

Dermot Shea, a former commissioner of the New York City Police Department, urged the public not to jump to any conclusions based on preliminary reports.

“It’s important to understand that a scene like this can be chaotic. “You can have all kinds of information coming in, and trained investigators have to sift through it to figure out what’s real versus what someone perceived in a split second,” Shea told MSNBC.

“As time passes, this crime scene will only get bigger. Consider what would happen if this happened on a moving train. As a result, there’s a chance that evidence will be tampered with. People are frantically fleeing the building. So now that everyone has calmed down, the investigation can begin in earnest. Witnesses, video, and other evidence are all critical at this point. The NYPD said in a statement that commuters should avoid 36th Street and Fourth Avenue “due to an investigation” and “emergency vehicles and delays in the surrounding area.”

A busy station serving the D, N, and R trains is located on that corner. In the immediate aftermath of the chaos, there is no service there or at some stations in Manhattan.

According to NBC New York, two schools have been placed on lockdown, and the majority of the stores in the area have been evacuated. Because they make express stops into Midtown Manhattan, the D and N lines are particularly popular. Cellphones across the five boroughs rang for hours after the incident, warning New Yorkers to avoid the area.

The subway shooting has been briefed to Vice President Joe Biden. Senior White House staff are in contact with Mayor Eric Adams of New York City and Police Commissioner Keechant Sewell of the New York City Police Department to offer any assistance that may be required.

The bloodshed on Tuesday comes as New York City businesses and employees grapple with return-to-work debates, including whether employees should be forced back to headquarters they haven’t seen in two years due to the Covid-19 pandemic.