It was a muggy summer day when the veteran reporter María Teresa Montaño Delgado drove almost 450 miles from Toluca, capital of the state of Mexico (Edomex), to a rundown neighbourhood in Coatzacoalcos, an oil city on the Gulf coast.
Montaño carried with her a $35m contract for “specialist human capital management” with the government of Edomex – the last bastion of power for the Institutional Revolutionary Party (PRI) which has ruled the state uninterrupted for almost a century.