One of the 43 students, that have been missing for over two months was identified amongst remains that were for the most part burned to ashes, said a Mexico government official and family members of the victim.
The official said that added considerable weight to the theory prosecutors have that the students had been killed following their abduction by police and turned over to a gang.
The office of the federal attorney general scheduled a Sunday news conference to announce the new discovery, which still has not been declared as official.
The disappearance of the 43 students had upset the country for many weeks and exposed deep links between organized gangs and local officials.
The case helped push the approval ratings of Mexico President Enrique Pen Nieto to their lowest in his tenure of two years and to the lowest of any sitting president in Mexico in close to two decades.
The extreme pressure has forced Pena Nieto to make policing and security his top priority over economic moves that he favored.
Jesus Murillo Karam the Attorney General said November 7 that some members of a gang that were in police custody described details about the student’s abduction after they had protested in Iguala.
Those witnesses told authorities the police, infiltrated with gang members and working under the orders of the mayor with gang ties, turned the students over to the gang.
The gang then killed the students, burned the corpses and placed the remains inside garbage bags and tossed the bags into a nearby river.
Family members however insisted that the search by authorities continue with the hope the student would be found alive.
The news on Friday and Saturday that the remains of one student were identified sent shock waves through family members.
Families had heard a rumor the students were alive inside a cave, in the hills or a warehouse, with only a handful accepting they had been killed.