A bus driving cruise ship passengers to Mayan ruins in eastern Mexico crashed on Tuesday, flipping over and killing at least 12 people, including one child, and injuring as many as 20.
There were 31 people on the bus, the tourism ministry of Quintana Roo state said, hailing from the United States, Italy, Sweden, and Brazil. Royal Caribbean says they were passengers on their Celebrity Equinox and Serenade of the Seas ships, headed to the ruins of Chacchoben, 110 miles south of Tulum.
Video shot on the scene shows that the bus was on a very narrow road that did not have a shoulder or guardrail, CBS News reports. The cause of the accident is under investigation.