NEW HAVEN, Conn. – More than 47 people overdosed on what’s believed to have been synthetic marijuana at or near a Connecticut city park. Consequently, pot smokers hit the ground en masse as fellow park-goers watched in horror.

Officials said most of the overdoses happened on the New Haven Green throughout the day on Wednesday.

“We have a guy laid out in the alleyway, unresponsive, eyes wide open. He’s out cold,” an unidentified bystander shouted, according to the New Haven Register.

Although no deaths were reported, authorities said two people had life-threatening symptoms.

According to CBS, the victims in a wide range of ages experienced “a multitude of signs and symptoms ranging from vomiting, hallucinating, high blood pressure, shallow breathing, semi-conscious and unconscious states,” said Rick Fontana, director of the city’s Office of Emergency Operations.

Narcan, an antidote for narcotic overdoses, was administered to some victims but was apparently ineffective.

“Do not come down to the Green and purchase this K2,” city Police Chief Anthony Campbell said. “It is taking people out very quickly, people having respiratory failure. Don’t put your life in harm.”

The Green, which attracts homeless people and drug users throughout the year, as the New York Post reported, is located in downtown New Haven to the south and west of the Ivy League Yale University.

On average, two people die of a drug overdose every day in Connecticut. The state has surpassed the national death rate for drug and opioid overdoses since 2013.

Connecticut city park

“Do not come down to the Green and purchase this K2,” city Police Chief Anthony Campbell said. “It is taking people out very quickly, people having respiratory failure. Don’t put your life in harm.” (Screenshot Fox News broadcast)

“People are self-medicating for several different reasons and every agency — police, fire, medical, hospitals — all are strained at this time. This is a problem that’s not going away,” New Haven Fire Chief John Alston Jr. Alston said, according to NBC Connecticut.

Police said they arrested a man believed to be connected to at least some of the overdoses in the park. The suspect’s name wasn’t immediately released.

Synthetic marijuana, which generally is plant material sprayed with chemicals that mimic the high from real marijuana, has been blamed for overdoses across the country.

Authorities suspect synthetic cannabinoids, known as K2, were laced with other substances in the New Haven cases, ABC reported.

K2 can result in seizures, psychosis and even death.

Officials were testing the blood of the victims to see exactly what they ingested.

The overdoses follow a similar outbreak at the same park on July 4, when more than a dozen people were treated.

Update: Overdoses now exceed 100.