All 33 were hospitalized nearby and are expected to survive

The neighborhood has become known as 'ground zero' for K2 addicts

It is believed they consumed same batch of K2 sold at a Brooklyn store

Witnesses saw them pass out, vomit, urinate and twitch in middle of roads

It was like a scene from an episode of The Walking Dead. But it wasn't zombies who could barely stand, it was New Yorkers.

And it wasn't an apocalyptic infection they were suffering from - but the same bad batch of bad drugs.

Thirty-three people were hospitalized for a possible overdose on K2, a type of synthetic marijuana, in Brooklyn on Tuesday morning.

Witnesses reported seeing more than a dozen people passing out, vomiting, urinating and twitching in the middle of the street around 9.30am in the Bedford-Stuyvesant neighborhood.

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Horrified children looked on as paramedics checked on two New Yorkers among the 33 who were hospitalized for a possible overdose on a bad batch of K2, a type of synthetic marijuana

Witnesses reported seeing more than a dozen people passing out, vomiting, urinating and twitching in the middle of the street around 9.30am in the Bedford-Stuyvestant and Bushwick neighborhoods

At least 17 people reportedly reacted to the drug almost simultaneously near Broadway and Myrtle Ave, an intersection that has become known as 'ground zero' for K2 addicts in the city

Police first received a report of multiple people with an 'altered mental status' outside a Brooklyn community garden on Stockton Street

They reportedly reacted to the drug almost simultaneously near Broadway and Myrtle Ave, an intersection that has become known as 'ground zero' for K2 addicts in the city.

Lindsay Foehrenbach, a resident of the neighborhood for the last 11 years, described the 'appalling' scene to Daily Mail Online.

'People just kept showing up and then quickly dropping to the ground, flopping over hoods of cars, or crumpling onto the sidewalk,' she said.

'They all seemed oblivious to their surroundings and just couldn't stay on their feet. I saw four ambulances show up and more entering the intersection as I was leaving.'

Foehrenbach said one man was spread eagle and lying face down on the ground. Another man laid down in the street between two parked cars. His shoes were off and he was unresponsive.

Resident Brian Arthur likewise witnessed the 'horrible' scene.

'Some of them were motionless. This is nothing you'd want your kids to see,' he told the New York Daily News.

Arthur, 38, filmed the incredible scene and posted it on his Facebook, showing people who couldn't stand up straight and had to be held up by officers as they waited for a stretcher.

'This is no joke over here right now, this is tragic,' Arthur says as his camera moves from one passed-out New Yorker to the next.

'This is crazy. Tell your kids, tell your family, stay off of that man.'

K2 contains man-made chemicals that act on the same cell receptors in the brain that THC does in natural marijuana. It is dirt cheap, often sold for one to five dollars for a stick or package

One resident said it was a 'horrible scene' filled with K2 addicts who were 'motionless' on the street

Arthur said it was mostly young, teenage boys who he saw overdosing in the street.

Police first received a report of multiple people with an 'altered mental status' outside a Brooklyn community garden on Stockton Street.

Officers found eight intoxicated individuals before discovering nine more, according to the New York Post.

'Obviously it was a bad batch, a source told the Post. 'They are lucky they didn't die.'

Authorities said all of the hospitalized patients were expected to survive.

K2 contains man-made chemicals that act on the same cell receptors in the brain that THC does in natural marijuana. It is dirt cheap, often sold for one to five dollars for a stick or package.

Researchers have found instances in which chemicals in synthetic marijuana can bind much more strongly to cell receptors than THC, producing stronger effects.

Because the chemicals vary from packet to packet, the effects of K2 are unpredictable and can change from use to use, according to the New York City Health Department.

This man could not stand up on his own and had to sit down as he talked to authorities

The man then had to be physically held up by police as they waited to load him onto a stretcher

Authorities said all of the hospitalized patients were expected to survive but were lucky 'they didn't die'

Effects of K2, which is packaged under names like Spice, AK-47, Smacked, and Dank, can include extreme anxiety, confusion, paranoia, and hallucinations.

More than 6,000 people have been sent to the emergency room in New York because of K2 since 2015 and there have been two confirmed deaths caused by the drug.

New York Mayor Bill de Blasio signed a bill in October that made it illegal to sell or produce K2, making it a crime punishable by up to a year in jail and fines of more than $100,000.

In May he announced that there had been an 85 percent decline in K2-related emergency visits in the last 10 months.

But on Stockton Street the drug remains a constant problem for residents, who had taken to putting up handwritten signs that read 'No Smoking K2'.

WHAT IS SYNTHETIC MARIJUANA? Synthetic marijuana contains man-made chemicals that act on the same cell receptors in the brain as THC does in natural marijuana. Researchers have found instances in which chemicals in synthetic marijuana can bind much more strongly to cell receptors than THC does in marijuana that is grown This can produce stronger effects, such as an elevated mood or feeling of relaxation. But synthetic marijuana is also known to have psychotic effects on some users. These can include extreme anxiety, confusion, paranoia and even hallucinations. Source: National Institute of Drug Abuse Advertisement

'They're like walking zombies,' said Jimmy Bravo, a clerk at a local bodega told the New York Daily News. 'Ambulances pick them up night and day, 24 hours. Cops see them but they don't do nothing.'

Foehrenbach said Tuesday was 'far, far, worse than usual'.

'Today was unprecedented,' she told Daily Mail Online.

The longtime resident said she had observed a K2 problem in the neighborhood for the past two years, but said it had really escalated in recent months.

'Our local community gardens have become a popular spot for this,' she said.

'As a result they're plagued with people passed out, loitering, trash and public urination.'

The NYPD said in a statement there has been a regular and 'targeted enforcement' in the area that has resulted in 'multiple arrests and seizures of K2'.

Neighbors said police frequently raid the bodega for K2.

It is believed that Big Boy Deli has become the 'sole distributor' of the drug in the area, according to DNAInfo.com.

Foehrenbach said she has been told that everyone is aware the problem is stemming from the Deli.

'I do think that the owners of this deli should be ashamed of themselves,' she said.

'They care less about the neighborhood that supports them and more about the almighty dollar.'

'They are willing to poison a population of already vulnerable people, let the fallout spill over the surrounding street and let everyone else clean up the mess while they profit.'

Residents who lived in the neighborhood's nearby homeless shelter and treatment clinics said emergency workers warmed them that a bad batch of K2 was going around.

The New York Health Department said it is investigating and monitoring emergency rooms across the city.

Another man was so out of it he leaned onto a fire hydrant for support. One resident said most of the addicts in the neighborhood were teenage men