San Antonio police quietly sidelined one of their own after undercover detectives stopped his personal vehicle last summer and found a woman wanted on a felony robbery warrant sitting in the front passenger seat. An internal probe later flagged questionable computer searches linked to the case, and the officer ultimately served a brief two-day suspension earlier this year. The situation only came to light after reporters dug through recently released discipline files.
According to KSAT, undercover detectives stopped Officer Thomas Gutierrez’s vehicle in the 500 block of Carroll Avenue on Aug. 10, 2025, and identified his front-seat passenger as Amanda Argumedo, who was wanted on a felony robbery warrant. Gutierrez told internal investigators he had known Argumedo since 2018 and understood that she had a criminal record and was showing up in court on a different case. What started as a traffic stop quickly spiraled into a full-blown internal affairs investigation and a list of policy violations.
Department Rules That Triggered the Review
San Antonio Police Department policy bars officers from keeping close company with people whose behavior could drag the department’s reputation through the mud, and it requires officers to self-report situations that might generate citizen complaints. Those expectations are laid out in SAPD’s Rule 3.30 and Procedure 303, language spelled out in an arbitration award that has become a kind of handbook for how the department defines “consorting with persons of ill-repute” and other off-duty trouble. The same document describes how off-the-clock relationships and any misuse of city equipment or databases can end up as disciplinary cases.
Discipline records reviewed by reporters show investigators concluded that Gutierrez improperly tapped department databases, pulling up a September 2025 police report that mentioned him by name and running a check in November 2023 to see whether Argumedo had active warrants, according to KSAT. Internal affairs cited him for unauthorized use of computer hardware. Paperwork shows the alleged consorting issues and the computer-access findings were treated as two separate rule violations. A three-year veteran of SAPD, Gutierrez served his two-day suspension at the end of January.
How This Fits With Past Discipline
The case does not exist in a vacuum. Local coverage has tracked a series of SAPD discipline fights tied to off-duty conduct and questionable personal ties, including cases where suspensions later wound up in arbitration or civil-service appeals, as reported by the San Antonio Express-News. The same arbitration record that spells out Rule 3.30 and Procedure 303 has surfaced in those earlier disputes too, laying out the framework the department leans on when it decides an officer’s private associations have crossed the professional line. That backdrop helps explain why investigators zeroed in on Gutierrez’s relationship with Argumedo and his related database queries.
For now, the matter appears contained to SAPD’s internal discipline system. Any further punishment, reversals or compromises would move through the department’s administrative channels and the city’s civil-service process. Public records observers will be watching for fresh filings or official notices that could tweak or overturn the department’s current decision.
