Guerrero state Gov. Angel Aguirre has given no further details during a Saturday news conference in Iguala, the city where police are being accused of working with a drug gang in the disappearance of the students two weeks ago.
Aguirre doesn't say if all of the 28 bodies removed last weekend have been identified.
The governor also has given no information on what authorities may have found in other mass graves that were discovered in the same area. That find was announced on Thursday by Mexico's attorney general.