The New York State Police on Saturday released the names of the five passengers who were killed after a tour bus traveling to New York City from Niagara Falls, N.Y., crashed and flipped over on a highway outside Buffalo on Friday afternoon.

The deceased, whose ages ranged from 22 to 65, include a person from Madhubani, India, three people from New Jersey and a Chinese student at Columbia University, according to the police.

The release of the names comes roughly 24 hours after the deadly crash on the New York State Thruway, which sent the tour bus toppling into a ditch, ejecting many of its passengers and pinning some beneath the vehicle, officials said.

The people who died in the crash were:

• Shankar Kumar Jha, 65, of Madhubani, India

• Pinki Changrani, 60, of East Brunswick, N.J.

• Zhang Xiaolan, 55, and Jian Mingli, 56, of Jersey City, N.J.

• Xie Hongzhuo, 22, of Beijing

The crash took place at around 12:30 p.m. near Pembroke, N.Y., roughly 30 miles east of Buffalo, according to the authorities. The bus, which was carrying 54 people, appeared to drive into the median, correct course and then overturn, rolling into the embankment on the side of the road.

The cause was under investigation and did not appear to involve a mechanical failure or the impairment of the driver, Maj. Andre J. Ray of the State Police said at a news conference on Friday. Investigators believe the driver, identified as Bin Shao, 55, of Flushing, Queens, had become distracted and lost control of the vehicle, the authorities said.

The bus was the only vehicle involved in the crash.

The collision ejected many passengers from the bus, while others were trapped underneath. On Friday, the police said it appeared that many passengers had not been wearing seatbelts at the time.

This is a developing story and will be updated.