Multiple people have died after a Niagara Falls tour bus crashed in New York state.

At least 50 people onboard were “ejected” or have been trapped, police said, as rescuers scramble to free passengers stuck beneath the coach.

A state police spokesman said there were “multiple fatalities, multiple entrapments and multiple injuries”.

The bus, which was carrying tourists from Niagara Falls back to New York City, rolled over on the I-90 near Pembroke, about 30 miles east of Buffalo.