Mario Martinez, a 56-year-old Hispanic man from Brownsville, Texas, died of a gunshot wound on June 8, 2017, after an altercation at a Raymondville home. Investigators say his half-brother, Reynaldo Acosta, fatally shot him during the incident. The matter prompted a multi-agency response involving the Raymondville Police Department, the Willacy County Sheriff’s Office, the Texas Department of Public Safety, and the Texas Rangers.

During the inquiry a manhunt sought a primary suspect, who was arrested at a Raymondville residence without incident; a woman was also detained though her charges were not immediately released. The primary suspect was arraigned on first-degree murder charges. Separately, Maria Mercedes Cancino, on behalf of Mario Martinez’s estate, later filed a civil suit against Cameron County and several officials alleging excessive force and constitutional violations.