Mexican President Enrique Pena Nieto has announced plans to overhaul the country’s police forces, in the wake of the disappearance of 43 students.

Mr Nieto said he would unify all local police units into one national force.

The students, all trainee teachers, went missing in September after joining a protest in Iguala, Guerrero State.

Their disappearance sparked mass protests, with many still unconvinced by the official explanation that the students were murdered by a drugs gang.