At least 12 people died when a bus carrying cruise ship passengers to Mayan ruins in eastern Mexico flipped over on a highway early Tuesday, officials said. The crash occurred as the bus was on its way to the ruins at Chacchoben, about 110 miles south of Tulum. Seven Americans and two citizens of Sweden are among the injured, according to authorities. Miami-based Royal Caribbean Cruises said in a statement that passengers from two of its ships, the Celebrity Equinox and Serenade of the Seas, were involved in the crash. The cause of the accident was under investigation.
