The assault allegedly involved military forces in Chiapas - an investigation has been opened.
Local police in the Mexican town of Tuxtla Gutierrez in the southern state of Chiapas, threw tear gas at relatives of the 43 killed students of Ayotzinapa, as well as students of the Mactumactza School, as they protested demanding justice.
The demonstrators blocked the roads with relatives of the 43 students who disappeared six years ago, demanding justice since the judicial procedure has been contested numerous times by international organizations and human rights groups.
Three students were injured, as well as two mothers and one teen girl, according to the communiqué released by the rights group Montaña “Tlachinollan.”
The assault was condemned by Interior Minister Olga Sanchez Cordero and the Sub-Secretary of Human Rights Alejandro Encinas, who asked the state government to give immediate attention to the injured people and to investigate the cases of police violence.
"The Mexican government will thoroughly investigate Sunday night's aggression against students and parents of the 43 school students of Ayotzinapa," the Ministry of Government announced Monday.
Sanchez Cordero made a strong statement against the events and in a new tweet insisted that what happened in Chiapas demands an exhaustive investigation.
On the night of Sept. 26, 2014, students from the Ayotzinapa school, a rural all-male teacher training college known for its leftist activism, were attacked in the city of Iguala after they had commandeered buses to travel to Mexico City for a protest.
The administration of then-President Enrique Peña Nieto concluded that the students were killed by a local drug gang after being abducted by municipal cops acting on the orders of Iguala’s corrupt mayor and that their bodies were incinerated at a waste dump in the nearby town of Cocula.
Almost every element of the official account has been shredded.
Mexican and international experts concluded that the bodies could not have been disposed of in that way, while leaked reports from the AG Office established the involvement of federal police and military personnel in the Iguala violence.