Authorities say that none of the remains found are connected to the students who disappeared after clashing with police in the city of Iguala last September.
According to prosecutors, the students were turned over to a drug gang that killed them and incinerated their bodies.
This case has put a spotlight on the huge number of people who have gone missing around the country, where drug violence is widespread.
The Associated Press reported that the number of bodies and graves found from October to May could possibly be higher.
Authorities say more than 20,000 people are listed as missing across Mexico, and there are many 'disappeared' in Guerrero, a state that is a major producer of opium and a battleground among several cartels.
The government has said there is no evidence to suspect the 43 students were involved in the drug trade, but claims they were mistaken for a rival rang.
Unmarked graves began turning up after an investigation into the disappearance of the 43 young men following the confrontation between students and police that resulted in six confirmed deaths in Iguala, which is located south of Mexico City.
Read the rest here...