In a document released yesterday, the official commission said the office's response to its report has been "insufficient and imprecise" and prosecutors have failed to provide documentation to supports some of their positions.
The commission issued a list of 32 omissions in and recommendations for the investigation of the disappearance of the teachers' college students, a case that has sparked large protests and outrage around the world.
Their remains were allegedly put in garbage bags and dumped in a nearby river.
But the commission's July report said the federal investigation had not developed profiles of each of the missing students that would include basic details such as blood type, fingerprints and distinguishing characteristics such as scars or tattoo.
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Later, an independent panel formed by the Inter-American Commission on Human Rights also dismantled the government's official version of events.
The Mexican human rights commission said that of the 26 observations it made in its July report that related to the federal Attorney General's Office there were also recommendations for state and local authorities two were "partially attended to; one was partially addressed with a minimal advance; three are the process of being attended to and 20 weren't addressed" at all.