Mexico’s attorney general says none of the 43 students missing since a confrontation with police in a southern city were among the 28 bodies found in the first set of mass graves outside that town.
Jesús Murillo Karam says there are still no signs of the teachers college students who disappeared on September 26 after violent incidents blamed on police in the city of Iguala.
He also says 14 more police officers have been arrested and confessed to participating in the disappearance.
The 14 are from the police force of Cocula, a town neighboring Iguala.
Authorities have said police were working in conjunction with a local drug gang.
Read more: Where are Mexico’s missing students?