A system including an electronic holster for detecting and monitoring shootings and a monitoring centre, said electronic holster comprising two main components: a sheath for containing the weapon and a sensor which provides the receptive, computational and connective capacities to said holster; said sensor being interchangeable by actuating a service button; said holster is configured to communicating with said monitoring centre; said communications are configured to occurring in an encrypted manner on both sides; said communications are configured to being stored both in the holster and in the servers of the monitoring centre; said sensor is configured to be in active mode, or stand-by mode; said sensor is configured to entering active mode in the following cases: the service button is pressed to replace the sensor; the weapon is removed from the sheath; it is inserted for the first time into the special support; said sensor is configured to be in standby mode most of the time so as to save energy; said sensor configured to returning to standby mode after a pre-established number of seconds from activation in the event of and; said sensor configured to returning to standby mode only after the weapon is placed back into the sheath in the event of; in active mode, said sensor is configured to detect noises through a microphone and it is configured to process the audio through a computational unit; said computational unit is configured to send the processed audio to a component for the execution of a neural architecture; said component for the execution of a neural architecture is configured to classify the sounds and to detect the following events: ∘ removal of the safety catch; ∘ the cocking of the pistol; ∘ shot fired by the weapon; ∘ shots fired by other weapons; ∘ type of weapons that fired the shots; ∘ the action of loading the pistol; said sensor being configured to record in its memory events, together with those of removing the weapon, inserting the weapon and maintenance of the sensor; the sensor is configured such that said events being sent to the monitoring centre by means of an LTE module installed on board said sensor; the sensor is configured such that the position of the holster being sent by means of a GPS module installed in said sensor upon each notification; the sensor is configured such that said communications occurring in an encrypted manner; said monitoring centre is configured to store - in an incorruptible manner - the events sent by the holster; said events allowing the reconstruction of a shooting; said events allowing the reconstruction of the movements during the shooting; said events allowing the monitoring centre to send immediate reinforcements and/or assistance on the ground; said sending of reinforcements and/or assistance being decided automatically upon the first receipt of a given type of notification. the service button is pressed to replace the sensor; the weapon is removed from the sheath; it is inserted for the first time into the special support; said sensor is configured to be in standby mode most of the time so as to save energy; said sensor configured to returning to standby mode after a pre-established number of seconds from activation in the event of and; said sensor configured to returning to standby mode only after the weapon is placed back into the sheath in the event of; in active mode, said sensor is configured to detect noises through a microphone and it is configured to process the audio through a computational unit; said computational unit is configured to send the processed audio to a component for the execution of a neural architecture; said component for the execution of a neural architecture is configured to classify the sounds and to detect the following events: ∘ removal of the safety catch; ∘ the cocking of the pistol; ∘ shot fired by the weapon; ∘ shots fired by other weapons; ∘ type of weapons that fired the shots; ∘ the action of loading the pistol; ∘ removal of the safety catch; ∘ the cocking of the pistol; ∘ shot fired by the weapon; ∘ shots fired by other weapons; ∘ type of weapons that fired the shots; ∘ the action of loading the pistol; said sensor being configured to record in its memory events, together with those of removing the weapon, inserting the weapon and maintenance of the sensor; the sensor is configured such that said events being sent to the monitoring centre by means of an LTE module installed on board said sensor; the sensor is configured such that the position of the holster being sent by means of a GPS module installed in said sensor upon each notification; the sensor is configured such that said communications occurring in an encrypted manner; said monitoring centre is configured to store - in an incorruptible manner - the events sent by the holster; said events allowing the reconstruction of a shooting; said events allowing the reconstruction of the movements during the shooting; said events allowing the monitoring centre to send immediate reinforcements and/or assistance on the ground; said sending of reinforcements and/or assistance being decided automatically upon the first receipt of a given type of notification.