Mexican authorities have discovered another seven mass graves in the southern state of Guerrero, according to media reports Wednesday.
According to officials,10 bodies had been found across the seven clandestine graves sites in the central municipality of Chilapa, but their remains had not yet been identified. Officials also confirmed that a decapitated head had also been found.
The remains, which were discovered Monday night, have been sent to the Forensic Medical Services of Chilpancingo in the capital of Guerrero.
Several mass graves have been discovered in Guerrero since authorities have stepped up their search for the remaining 42 students who are still missing after being attacked by police and unidentified masked men in September 2014. The remains of one of the 43 Ayotzinapa teacher trainee students, Alexander Mora, was identified by an Austrian forensic team.
Demonstrations have since erupted across the country with protesters demanding an end to government corruption after it was discovered that a local mayor and his wife were involved in the disappearance of the students.
The 43 disappeared students have become a symbol of the larger problem of government corruption and impunity in the country. Protesters have accused all levels of government (municipal, state and federal) of being implicated in the mass killings and disappearances of thousands of people across the country.