An armed group fired bullets at the headquarters of the State of Mexico Prosecutor's Office in the municipality of Sultepec, in the south of the entity, the gateway to the Tierra Caliente region.
It is the fourth attack against properties or agency agents in just over a year.
In a statement, the Prosecutor's Office has reported that two state police officers who were guarding the building were injured.
Neither officially nor as a note in the local media has the possible reason for so many attacks been pointed out.
All the attacks have occurred within a radius of just over 50 kilometers.
In November, gunmen ambushed a contingent of the ministerial police in Texcaltitlan, very close to Sultepec.
Two officers were killed and six others were injured.
In October, criminals again ambushed prosecutors very close to there, on the highway that goes from Ixtapan to Almoloya de Alquisiras.
There were no deaths or injuries that time.
Earlier, in March, gunmen fired on a convoy of state and ministerial police in Coatepec Harinas, near Ixtapan.
13 agents died then.
The March event moved the attention of the media for a few days to the south of the State of Mexico, a rural region, with a strong presence of organized criminal groups, which move between the municipalities mentioned above and those that appear further south, in the case of Tejupilco, Luvianos or Tlatlaya, in addition to the residents of the State of Guerrero, in the case of Arcelia.
Then, the State Prosecutor's Office reported the arrest of 25 people and spread the idea that the Familia Michoacana criminal group was behind the attack.
It even distributed images of three individuals, with their names and surnames, as alleged masterminds of the attack: Alberto Romero Pérez, alias Macrina, Silverio Martínez Hernández, known as Fierros, and Gilberto Misael Ortiz Trujillo, identified as Barbas.
As the months went by, the Prosecutor's Office reported new arrests, for example Rodrigo, alias El Chamarras and Cristian, alias El Chango, both in October, or Juan Pedro, alias El Pitufo, in January.
In both cases, the agency indicated his alleged belonging to the Familia Michoacana.
It so happens, however, that none of the three was part of the trio whose photos the prosecution had released months earlier, shortly after the attack.
In the case of Sultepec, the criminals blocked several highways in the area after the attack, mainly the one that leads to Toluca, the state capital.
In social networks, the blockade of the road that goes to Ixtapan was also reported.
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