A boat capsized while leading an underground cave tour near Buffalo on Monday, police said.
The boat was carrying passengers through Lockport Cave, about 20 miles north of Buffalo, when it flipped.
While authorities did not say how many people were on board, the incident triggered a massive emergency response.
“Lockport police and fire departments, as well as several other agencies, are currently working to assist parties that were on a boat that capsized in the Lockport Cave tours,” the local police department said just after 12 p.m. in a press release. “Crews are working to assist all parties safely out of the area. The incident is still ongoing.”
Several streets in the area were closed to make the response easier, authorities said.