A tour bus returning from Niagara Falls to New York City crashed on a highway after hitting a semi-truck, leaving multiple people dead, including a child, and dozens injured. Doctors said 24 patients are being treated at Erie County Medical Center as investigators, including the NTSB, work to determine what caused the bus to topple onto its side. For more context and news coverage of the most important stories of our day, click here: nbcnews.com » Subscribe to NBC News: nbcnews.to/SubscribeToNBC » Watch more NBC video: bit.ly/MoreNBCNews » Subscribe to Here's the Scoop podcast: nbcnews.com/heres-the-scoop-daily-podcast NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features NBCNews.com, MSNBC.com, TODAY.com, Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in...