On 8 September 2014, a fire extinguisher bomb exploded in the Escuela Militar metro station in Santiago, Chile, injuring 14 people, several seriously.

Self-radicalized anarchist Juan Alexis Flores Riquelme, along with his then-girlfriend and another friend, were arrested for the bombing, though the latter two were later acquitted.

In August, President Michelle Bachelet appointed a special prosecutor to investigate the threat of future bombings.

[7] The Carabiniers of Chile responded with their bomb squad and special investigators in order to gather evidence and the national government also requested the assistance of foreign security agencies in identifying the bombers.

[8][9] In response to the new attacks, the national government announced that they would be invoking Chile's controversial Anti-terror law which allows for longer detention without charge, the use of wiretaps, and confidential witnesses.

[10][11] The bombing also raised concerns about whether more explosions would occur in the days nearing the anniversary of the dictatorship of Augusto Pinochet.

The suspects identified as Juan Alexis Flores Riquelme, Guillermo Cristóbal Durán Méndez and Nataly Antonieta Casanova Muñoz.

According to the authorities gunpowder and other bomb making materials were found in the suspects' homes, with Juan Flores being the mastermind behind the organization.

The bomb consisted of a plastic bottle filled with aluminum and hydrochloric acid, was placed inside a trash can.