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Search Warrant
<br />Page 12 of 14
<br />references a subject named, “Menudo.” During one conversation with an individual, Longoria advised the subject
<br />“Menudo gets out tonight”. The message was sent on March 9th, 2023. I conducted a records check and
<br />confirmed Quirino was released on a parole violation on the same date 03/09/2023.
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<br />In my training and experience, gang members sometimes have use multiple monikers as an attempt to disguise
<br />their true identity from law enforcement. Quirino has a documented moniker of “Menace”, however I believe he
<br />also uses the moniker of “Menudo”, which is not documented and referenced mulitple times in Longoria’s
<br />cellphone extraction.
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<br />Based on your my training, experience, and conversations that I have had with victims, witnesses, and suspects
<br />in gang-related crimes, as well as other law enforcement officers, and/or reports that your Affiant has read, your
<br />Affiant is familiar with the methods utilized by gang members to communicate before, during, and after the
<br />commission of crimes. I have become knowledgeable of the tactics and methods typically utilized by gang
<br />members in conducting gang-related activities and of the language and patterns of such activities. Your Affiant is
<br />aware that suspects, co-conspirators, victims, and witnesses often communicate with other persons and/or each
<br />other through electronic devices and means including, but not limited to, phone calls, during, and after the
<br />commission of crimes. Moreover the data may demonstrate the suspects proximity to the location of the crime
<br />and reveal communications the suspect(s) made with accomplices and/or other ptotential suspect(s).
<br />
<br />I have a general understanding of how the cellular telephone network operates. I am aware that cell sites (towers)
<br />are strategically placed by cellular service providers, to provide a seamless operation so people can travel
<br />virtually anywhere and make or receive an uninterrupted call, send or receive text messages, or initiate a data
<br />session via their cellular phone. Usually, cell sites will be mounted high on a large pole, building, or other structure
<br />which provides line of sight with the population below. Cell sites are typically divided into sectors, which are made
<br />up of antennas connected to cellular radio transceivers. Each sector is mounted on the cell site and faces a
<br />specific direction to provide maximum cellular coverage for the people in the area. The range of the cell site and
<br />sectors depends on many factors to include environmental and geographic factors and whether it is located in a
<br />highly populated, urban environment or desolate rural area. Cell site location information (CSLI) does not provide
<br />an exact location of a cell phone; the basic call detail record data only provides the physical location of the cell
<br />site (latitude and longitude) and a direction (azimuth) the antennas are facing from the cell site.
<br />
<br />I am aware when a person either initiates or receives a voice call, text message, or a data session (usage event)
<br />from their cellular device, the device broadcasts signals to the cell site that routes its communications. These
<br />signals include a cellular device’s unique identifiers as well as details about the usage event. I am also aware
<br />cellular service providers collect and store these usage event details (transaction records) associated with cellular
<br />phone numbers during the normal course of business. The usage event records, commonly referred to as call
<br />detail records, stored by their respective cell phone company, mostly contain the following information wi th some
<br />exceptions based on the specific carrier: Date, time, type of event, duration, phone number initiating the usage
<br />event (called, calling), even if caller identification is blocked by the calling party, text message transaction data,
<br />the international mobile equipment identifier (IMEI), the international mobile subscriber identifier (IMSI), IP packet
<br />data session logs, and cell site location and sector information at the beginning and ending of each usage event.
<br />
<br />I am aware cellular service providers maintain specialized location records consisting of engineering data. These
<br />data sets are used by the providers to troubleshoot coverage areas and report back on potential dead spots, all
<br />with the intent to oversee and optimize the cellular network. Specialized location records typically contain data for
<br />every usage event, to include technology details (e.g. voice, text, data), resource usage, and call failure
<br />information. They can also include data for incomplete calls (e.g. denied calls and set-up failures). These records
<br />not only include the basic call detail records, but also an estimation of the target phones location (Latitude and
<br />longitude) with a possible accuracy radius, and/or the distance from the cell site at the time of the usage event.
<br />
<br />Utilizing specialized location records can provide investigators with a much smaller footprint of a target phones
<br />location and could place a target phone within close proximity of a crime scene before, during and after a crime.
<br />Each carrier uses their own nomenclature to describe the technology used to obtain this data including: NELOS
<br />(Network Event Location System) – AT&T-Mobile, RTT (Round Trip Time/Return Trip Time/Real Time Tool) -
<br />Verizon & U.S. Cellular, PCMD (Per Call Measurement Data) – Sprint & U.S. Cellular, and TDOA (Time
<br />Difference of Arrival) or Timing Advance Information – T-Mobile & Metro by T-Mobile. I believe this information is
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