A tour bus returning from a trip to Niagara Falls overturned in upstate New York on Friday, killing five people and injuring dozens of others, some of whom became trapped or ejected, police said. The deadly crash occurred on Interstate 90 in Pembroke, near Buffalo, according to New York State Police.

Those who were killed include a student from Columbia University, three New Jersey residents and a man from India.

As more details emerge from Friday's deadly tour bus crash on Interstate 90, the heroic efforts of first responders who worked to save lives are coming to light.