17th Judicial DA

17th Judicial District Attorney’s Office Files First-Degree Murder Charge Against Jonathan Garcia and Matthew McMahon

Brighton, CO —Today, the 17th Judicial District Attorney’s Office is announcing the filing of charges against Jonathan Garcia, 19, and Matthew McMahon, 18, for their alleged actions related to the death of 18-year-old Fernando Perez. The defendants are accused of fatally shooting and robbing Perez in Thornton on December 3, 2021. Allegedly, the defendants and the victim originally communicated on social media and agreed to meet to complete a clothing sale. The Thornton Police Department investigated the case.

Garcia and McMahon’s charges include:
  • First-Degree Murder (F1)
  • Second-Degree Murder (F2)
  • Aggravated Robbery (F3)
  • Conspiracy to Commit Aggravated Robbery (F4)
Case numbers 2022CR000347 and 2022CR000353 were filed in Adams County District Court. Garcia’s next scheduled court appearance will be on April 8, 2022, at 1:30pm. McMahon’s next scheduled court appearance will be on February 23, 2022, at 8:30am.

The filing of a criminal charge is merely a formal accusation that an individual(s) committed a crime(s) under Colorado laws. A defendant is presumed innocent until and unless proven guilty. See Colo RPC 3.6.

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District Attorney Mason assumed the oath of office on January 12, 2021. The 17th Judicial District Attorney’s Office endeavors to seek justice on behalf of the citizens of Adams and Broomfield counties in felony and misdemeanor cases. DA Mason and his staff are dedicated to transforming the criminal justice system to better serve the citizens of the 17th Judicial District.

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