Mexico has widened its investigation into the abduction and apparent massacre of 43 trainee teachers in the southwestern city of Iguala in 2014 to examine the role of federal and state police, a federal prosecutor said.
During the first year of the investigation, authorities focused on the municipal police in Iguala and the nearby town of Cocula, who federal prosecutors said were in cahoots with a drug gang suspected of killing the students.
The disappearance of the 43, on Sept. 26, 2014, sparked international outcry . . .
