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San Antonio Man Gets 40 Years for Killing His 81-Year-Old Partner

Prosecutors say he told them he felt stressed about bringing his 4-year-old son from Colombia.

Overview

  • Alberto Rafael Ferrer Cabrera, sentenced Friday by Judge Kristina Escalona in Bexar County’s 186th Criminal District Court, received a 40-year prison term.
  • He called 911 on Feb. 1, 2025 and admitted he killed Donald Atha Weynandt, and officers found the 81-year-old dead with his throat cut at a South Side home on Felisa Street.
  • Investigators never established a motive, and the district attorney’s office said Cabrera described feeling stressed about bringing his young son from Colombia to the United States.
  • A jail source reported an ICE detainer, an immigration hold, and an illegal-entry charge after the arrest, yet current online court records list only the 2025 murder case.
  • Court records credit Cabrera with 413 days already served in the Bexar County jail.