At least two Indian tourists were killed and 35 others injured, three of them seriously, when a bus carrying them to Niagara Falls veered off a highway near here.
The bus, which was carrying tourists from Washington DC to Niagara Falls overturned due to a blown tyre in the woods near Avoca, 55 miles south of Rochester, in New York.
The front tyres were relatively new, Dan Ronan of the American Bus Association said.
Investigations into the black box inside the bus will offer more clues, about what the engine was doing, how many hours have been on it and the speed it was running, Robert Frost of the New York state police Crash Reconstruction Team said.
It will also give us trouble codes to see if there are any issues leading up to or during the crash itself, he said.
Meanwhile, New York state police Superintendent Joseph D’Amico said, the driver John DiNardo Jr had no history of violations.
The tour bus was operated by Bedore Tours of North Tonawanda which reportedly had no crashes in the last two years.