Mexico City, February 26 (teleSUR-RHC)-- Mexico's military released previously unseen photographs of students who survived a massacre in Guerrero state Wednesday that has sparked renewed controversy over the case of the 43 disappeared Ayotzinapa teachers training college students.

Published in the Mexican newspaper Milenio, the photos allegedly show 25 students that survived the initial shoot out in Iguala, Guerrero on September 26, 2014.

The photos have fueled renewed claims that Mexican authorities, including the military, were aware of the violence in Iguala as it was unfolding, but purposefully failed to intervene.

The shoot out took place after around 100 college students participated in a protest in Iguala against the local government.

When police intercepted the student protesters while en route to Iguala, clashes ensued, and according to witnesses 43 students were detained by police. Forty-two were never seen again, while one of the students remains were found in a mass grave. According to investigators, the group was handed over to the criminal cartel Guerreros Unidos by police, and were subsequently executed.

In January, Mexico's attorney general declared the case closed, announcing all 43 were presumed dead and no further leads were available.

However, families of the victims have riled against the case closure, arguing authorities should further investigate the role of the police and army.

A team of foreign forensic experts also investigating the disappearances has said it was impossible to confirm that the remains found by authorities belonged to the students and said state investigators ignored certain evidence in order to maintain their story.