First responders found more than two dozen people who appeared to have overdosed at a park in New Haven, Connecticut, within a three-hour span Wednesday morning, officials said.
A total of 25 people suffering from apparent overdoses have been transported to local hospitals from the New Haven Green, according to Rick Fontana, director of the city's Office of Emergency Operations.
The New Haven Police Department is investigating the case.
"There have been a couple individuals that were certainly more sicker than others," Fontana told reporters at a press conference Wednesday morning. "We are doing our best to get people to the hospital in the safest, most practical and efficient manner. We have no deaths reported."
New Haven Fire Chief John Alston Jr. said emergency crews were overwhelmed with "multiple" 911 calls about people who were experiencing overdose symptoms or were passed out on the New Haven Green just after 8 a.m. local time. First responders sprinted across the park from victim to victim as more calls came in.
"Even while we were trying to return people to service, they were passing victims on the ground," Alston told reporters.
The victims, who officials said ranged in age and demographic, were at times found in groups of four to six. Their symptoms included vomiting, hallucinating, high blood pressure, shallow breathing, semi-conscious and unconscious states, officials said.
Alston said it's unclear what was the cause of the overdoses, but officials suspect it may have been synthetic cannabinoids, known as K2, that were likely laced with other substances.
"It's a nationwide problem," Alston said of drug overdoses. "This is a problem that's not going away."