A rescue operation is underway following a collision involving a tour bus in Upstate New York on Friday, officials said. The crash occurred on Interstate 90 in Pembroke, near Buffalo, according to New York State Police. Images from the scene showed the bus on its side.

The bus carrying 51 riders lost control on eastbound Interstate 90 in the town of Pembroke at around 12:30 p.m.

"Avoid the NYS Thruway eastbound at all costs as a tour bus has rolled over near the Erie and Genesee County lines," Erie County executive Mark Poloncarz said on X. "This is a potential mass casualty incident," he said, adding that the county's emergency and security services are assisting.

M&Y Tour has a “satisfactory” safety rating and no record of accidents or fatalities over the past two years, according to the Federal Motor Carrier Safety Administration. Officials inspected the company’s buses and drivers 60 times over the past two years, the agency said.

A tour bus overturned on I-90 in Pembroke, NY, leaving up to 52 injured, some trapped or ejected, with emergency crews responding and traffic severely delayed