October 8, 2024 - SAN FRANCISCO – On Monday, Christian Quintanilla, a/k/a “Casper,” was sentenced to 63 months in prison for illegally possessing 11 rounds of unfired ammunition near 16th Street and Mission Street in the Mission District of San Francisco, announced First Assistant United States Attorney Patrick D. Robbins and Homeland Security Investigations (HSI) Special Agent in Charge Tatum King.  The sentence was handed down by the Hon. Richard Seeborg, Chief United States District Judge.      

Quintanilla, 24, of San Pablo, pleaded guilty to the unlawful ammunition possession charge on Mar. 19, 2024.  Quintanilla had previously admitted in a plea agreement to being a member of the MS-13 20th Street clique.  According to court documents, Quintanilla had been sentenced to 36 months’ imprisonment for his participation in two MS-13 gang-related assaults in San Francisco and was therefore prohibited from carrying either a firearm or ammunition.  Nevertheless, as described in court documents, Quintanilla was a passenger in a car with other MS-13 associates that led California Highway Patrol officers on a high-speed chase on June 17, 2023, after which officers located a handgun with a loaded magazine and a round in the chamber in the car.  Quintanilla’s involvement in this incident violated the terms of his federal supervised release, which led to the issuance of an arrest warrant.  On Sept. 7, 2023, San Francisco Police Department officers encountered Quintanilla near 16th Street and Mission Street in San Francisco.  When officers arrested Quintanilla, they found a 9mm Polymer 80 pistol (a “ghost gun”) with an extended magazine containing 11 unfired cartridges of 9mm ammunition.    

On Oct. 25, 2023, a federal grand jury indicted Quintanilla, charging him with one count of being a felon in possession of ammunition, in violation of 18 U.S.C. § 922(g)(1).  

In addition to the 63-month prison term, Chief Judge Seeborg ordered Quintanilla to serve three years of supervised release to begin after his prison term is completed.  Chief Judge Seeborg also found that Quintanilla’s possession of the weapon and ammunition violated the terms of his release relating to his August 2021 conviction and revoked his release, imposing a sentence of 24 months’ imprisonment to run concurrently with the 63-month term.

Assistant U.S. Attorneys Aseem Padukone and Andrew Scoble prosecuted the case, with the assistance of Kevin Costello and Yenni Weinberg.  The prosecution is the result of an investigation by HSI.
Source: DOJ Release