A compartment is overturned at the site of a train derailment on the Interoceanic Corridor of the Isthmus of Tehuantepec, a railway line connecting Mexico's Pacific and Gulf coasts, where several passengers were killed and injured near Nizanda, Oaxaca state, Mexico. Photo: Social media screengrab via Reuters Mexican authorities said on Sunday that at least 13 people were killed after an Interoceanic Train carrying 250 people derailed in the southern state of Oaxaca.