Some Mexican army soldiers were charged with disobedience, dereliction of duty and military discipline in the high-profile case for the execution of the 22 people, International Business Times reported. The other officials who were involved with hiding the massacre were not charged, according to McClatchy DC.

"This case was the object of a deliberate cover-up by the highest authorities in Mexico, both civil and military," said Jose Miguel Vivanco, the head of the Americas division of Human Rights Watch, a New York-based advocacy group.

"We have before us two crimes, the massacre and the cover-up."

The Mexican Supreme Court has ordered military personnel to be tried in civilian courts.

Witnesses say they were forced to sign false statements by federal organized crime investigators working for the attorney general's office and that more people were involved in the Mexican army cover-up than the soldiers who were charged, Fox News Latino reported.

A woman who survived the mass killing by the Mexican Army back in June said she was badly beaten when she refused to sign a false statement that 22 suspected drug gang members had died in a shootout with the army.

"As they were hitting me ... they told me they could make even the mute talk," the woman said.

The woman, who was sent to prison for five months on false charges on weapons, said there were more soldiers and other federal prosecutors involved in the cover-up of the Mexican army massacre.

Witnesses say the army killed killed 22 people after they surrendered, although the army said they died in a shootout.

Witnesses told reporters the suspects were lined up and shot dead.

The massacre was said to be one of the worse crimes committed by the Mexican army since President Enrique Pena Nieto took office in December 2012.

After an investigation, the other officials who were involved with hiding the massacre were not charged, according to McClatchy DC.

"This case was the object of a deliberate cover-up by the highest authorities in Mexico, both civil and military," said Jose Miguel Vivanco, the head of the Americas division of Human Rights Watch, a New York-based advocacy group.