A Brooklyn subway shooting suspect was wearing a gas mask and orange construction vest, NBC New York reported.

Multiple people have been shot at a Brooklyn subway station, with several "undetonated devices" found at the scene, CNN reported on Tuesday, citing the New York Police Department.

Meanwhile, the NY police department issued an advisory for the affected area.

"ADVISORY: Due to an investigation, avoid the area of 36th Street and 4th Avenue area in Brooklyn. Expect emergency vehicles and delays in the surrounding area," NYPD said.

New York Daily News said that the police are also investigating a possible explosion at the subway station.

🚨 Breaking: 6 reportedly injured in possible shooting at Sunset Park subway station in Brooklyn, New York.

Explosives devices were also found according to NYPD. pic.twitter.com/kHm8ooYNS8

— Real Mac Report (@RealMacReport) April 12, 2022

NYPD cannot confirm undetonated devices have been found at Brooklyn subway station

On the "undetonated devices" story, the New York police cannot confirm whether any undetonated devices have been found at a Brooklyn subway station where a shooting took place on Tuesday, an NYPD spokesperson told Sputnik.

"I cannot confirm that at this time," the spokesperson said.

NYPD still Investigating reasons behind subway station mass shooting

The New York Police Department (NYPD) is still investigating the causes of the now "confirmed" mass shooting at the Brooklyn subway station this morning but does not have the number of victims at present, a NYPD spokesperson told Sputnik on Tuesday.

Several people were shot, injured in a shooting in #NewYork subway station in #Brooklyn. #NYPD has issued an advisory to avoid the area of 36th Street and 4th Avenue area in the city. pic.twitter.com/bKUIIYqPRQ

— Al Mayadeen English (@MayadeenEnglish) April 12, 2022

"It’s confirmed shooting. We are still investigating," the spokesperson said. "We are still trying to ascertain more information from the troopers on the scene. We don’t have a number of the victims at this time."

The incident came just a day after US President Joe Biden announced new gun control measures, increasing restrictions on so-called "ghost guns", the difficult-to-trace weapons that can be assembled at home.

Over the past five-year period, the US Bureau of Alcohol, Tobacco and Firearms (ATF) could only trace 0.98% of suspected "ghost guns" handed in by law enforcement to an individual purchaser, the department added.

According to the organization Gun Violence Archive, more than 11,700 people have died by firearms since the beginning of the year in the United States, including suicides. 

Over the whole of 2020, the number rose to 45,000 dead, said the archive, a figure which has prompted the White House to speak of an "epidemic".