Defense lawyer says the 29-year-old may argue he acted in self-defense after a fight in rural Hidalgo County.

MERCEDES, Texas — A 29-year-old South Texas man is facing a murder charge after authorities said he stabbed his older brother several times during a family dispute at a rural residence near Mercedes on the night of Feb. 18, and a defense lawyer later told a judge the case may involve self-defense.

The case matters now because investigators have described the killing as a witnessed family fight that turned deadly, while the defense has already signaled a sharply different account. Hidalgo County sheriff’s deputies arrested Nestor Eduardo Flores the next morning in the death of 43-year-old Jose Gabriel Flores. At a Friday court hearing, the judge set bond at $1 million after defense lawyer Hector Hernandez Jr. argued for a much lower amount and said his client likely acted to protect himself.

Deputies were sent at about 8:33 p.m. Wednesday to the 3500 block of Mile 13 North, a rural stretch north of Mercedes in Hidalgo County. Sheriff Eddie Guerra said first responders reached the home and found Jose Gabriel Flores with multiple stab wounds. He was taken to a hospital, where he later died. Investigators said witnesses at the house told them the two brothers had been arguing before the confrontation became physical. In court the next day, Hernandez said the facts may support a self-defense claim. The remark did not resolve what happened inside the fight, but it set the stage for the case’s early dispute: prosecutors are treating the killing as murder, while the defense is signaling that the younger brother’s actions may have come during a struggle.

What authorities have said publicly is limited but specific on several points. Investigators said the brothers were identified as Jose Gabriel Flores, 43, and Nestor Eduardo Flores, 29. Witnesses told deputies the verbal argument escalated into a physical altercation. Authorities have said Nestor Flores then stabbed his brother in the back multiple times. Deputies also said the younger brother left before officers arrived and was later found at his home Thursday morning, where he was arrested. He had injuries of his own and was taken for medical treatment before later appearing in court. Video from the arraignment showed him wearing a sling on his left arm. Officials have not publicly described the extent of those injuries, whether any weapon other than the knife was involved, or what the brothers were fighting about.

The setting adds to the starkness of the case. The address identified by authorities sits in a sparsely developed area outside Mercedes, part of the Rio Grande Valley where many criminal cases begin with sheriff’s deputies responding to homes or family properties spread across rural roads. In this case, the known facts point to a dispute that unfolded in front of multiple people, which may make witness statements a central part of the prosecution. Family violence cases can be complicated even when outsiders are present, because witnesses may have seen only part of a confrontation or may describe the same moments differently. That is especially important here because the central unanswered question is not whether Jose Gabriel Flores died from stab wounds, but what happened in the seconds before the knife was used and whether the evidence will support the defense theory.

The first court fight centered on bond, not guilt. Hernandez asked the court to set bail at $10,000 and told the judge his client was likely acting in self-defense. The judge rejected that request and instead set bond at $1 million. Public reporting in the days after the hearing did not identify a next court date, leaving the case in an early procedural stage. From here, prosecutors are expected to continue gathering witness statements, medical evidence and any forensic results tied to the scene and the knife. Defense lawyers, meanwhile, are likely to examine the accused man’s own injuries, the positions of the two men during the struggle and whether the physical evidence matches the witness accounts. If the case proceeds in the usual way, later hearings could address bond, indictment status and trial scheduling.

Even in its early stage, the case carries the emotional weight of a killing inside one family. The known details are spare: a home in a rural part of Hidalgo County, relatives or other witnesses nearby, an argument that turned violent, and one brother dead while the other was led into court in a sling. No public statement from the Flores family had emerged in the initial reports, and investigators had not described any long-running dispute between the brothers. That silence leaves a gap often seen in family homicide cases, where the legal process quickly becomes public but the private history remains unclear. Hernandez’s brief courtroom statement was the only public voice offering an alternative frame, and it did not add specifics beyond the suggestion that his client had been defending himself.

The case remained at the charging stage as of the latest public reports, with Nestor Eduardo Flores held on a murder charge and no next court date publicly listed. The next milestone is likely to be a new hearing in Hidalgo County court or the filing of additional case records.

Author note: Last updated March 21, 2026.