A Mexican governor says some of the bodies recovered from clandestine graves found last weekend during the search for 43 missing college students do not match any of the young people who disappeared after a confrontation with police.

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.