Updated

A tour boat carrying passengers capsized in a cave in Upstate New York Monday, killing one person and injuring 11 others, authorities said.

Police and fire officials were working to rescue passengers who were traveling on the Lockport Cave Tours boat, the Lockport Police Department said.

Emergency responders outside of the Lockport Cave.

Emergency responders arrive at the Lockport Cave on in Lockport, New York on Monday, June 12, 2023. A boat carrying tourists through the underground caves capsized earlier in the day. (Tim Wenger/ WBEN Buffalo)

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The mayor's office said 28 visitors affiliated with Destination Niagra and one staff member were on board. Eleven people were transported to area hospitals for minor injuries, with a broken arm as the most severe. One fatality is under investigation, the mayor's office said, without elaborating. 

The incident happened on the Erie Canal, according to New York State Police in the Lockport Barracks.

The boat capsized just before 11:30 a.m. and streets in the area have since been closed to allow rescue vehicles and crews access to the area, police said. 

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Lockport police said earlier Monday there were "roughly 30 onboard" the capsized boat.

Emergency responders outside of the Lockport Cave.

Emergency responders arrive at the Lockport Cave on in Lockport, New York on Monday, June 12, 2023. A boat carrying tourists through the underground caves capsized earlier in the day. (Tim Wenger/ WBEN Buffalo)

Fox News Digital reached out to Lockport Cave & Underground Boat Ride but did not immediately hear back.

The company's website describes the excursion as "a guided historic walking tour" that includes a boat ride through the cave system, which was created about 150 years ago. Boat tours through the cave have been conducted since 1977, according to the site.

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lockport pd patrol car

Police and fire personnel are working to rescue passengers aboard a tour boat that capsized in a cave on Monday, Lockport police said. (Lockport Police Department)

The water in the cave is roughly 4 to 6 feet deep, WIVB-TV has previously reported.