Aug. 22 (UPI) — An undetermined number of people have died and many remained trapped inside a tour bus that crashed in upstate New York while returning from Niagara Falls on Friday afternoon, authorities said.

The bus was carrying 52 people, including the driver, when it crashed about 25 miles east of Buffalo on Interstate-90 between exits 49 and 48A, Spectrum News 1 reported.

The rollover accident ejected many of the passengers from the bus, and several passengers had died as of 2:30 p.m. EDT.

The bus was returning to New York City from Niagara Falls when the driver lost control for unknown reasons, causing a deadly rollover, New York State Police spokesman James O’Callaghan told media.

He said at least one of the fatalities was a child.

“It’s a very volatile scene,” O’Callaghan said. “We have vehicles going the wrong way on the 90.”

Most of the passengers were visitors from India, China and the Philippines, and first responders are taking accident victims to Strong Memorial Hospital in Rochester.

New York Gov. Kathy Hochul, in a social media post, called the accident “tragic” and said first responders are assisting all involved.

This is a developing story and will be updated.