Experts say 'sad' to leave without answer

The foreign experts came to Mexico in March 2015 with the daunting task of helping investigators solve the mysterious disappearance of 43 students

A year later, the five experts from the Inter-American Commission on Human Rights are going home without an answer for the desperate parents of the young men missing since September 2014.

But they leave behind a blistering account of the government's investigation - a report on Sunday that accused authorities of stonewalling them in their quest for new information and of possibly torturing suspects.