The development comes as a 23-year-old man faces a murder charge in the August death of Jonathan Alderete.
SAN ANTONIO, Texas — A person of interest sought by San Antonio police has come forward as investigators continue working a homicide case stemming from the fatal shooting of 35-year-old Jonathan Alderete during an early-morning confrontation at Hemisfair.
The development marks the latest turn in an investigation that began Aug. 30 and has already led to a murder charge against Isean Hardeman, 23. Police had released surveillance footage in late September while asking for help identifying another person connected to the circumstances surrounding the shooting. Authorities said Friday that the person had come forward, but they had not announced whether that individual would face charges.
Officers responded just before 5 a.m. Aug. 30 to the 600 block of Hemisfair Plaza Way after receiving a report of a shooting. Police found Alderete wounded and said he was taken to a hospital, where he later died. A preliminary police account described a physical confrontation over property without identifying the property involved.
Investigators later developed a more detailed account. An arrest affidavit said surveillance video showed Hardeman and three other people taking a basketball that belonged to Alderete. The group moved with the ball to another basketball court near the Tower of the Americas, according to information released during the investigation. Video evidence showed Alderete and Hardeman becoming involved in a physical confrontation, authorities said.
Police identified Hardeman through surveillance evidence gathered from the downtown area, according to the affidavit. Investigators said video showed him leaving on an e-scooter, abandoning it and later boarding a VIA bus. Officers located him at a South Side apartment days after the shooting and arrested him.
Hardeman was charged with one count of murder, a first-degree felony. Court records cited in local reports showed his bond was set at $250,000. The charge remains an allegation, and Hardeman is presumed innocent unless proven guilty in court.
The investigation remained active after Hardeman’s arrest. San Antonio police later released a 40-second surveillance video showing another person of interest entering and leaving a Denny’s on East Commerce Street about an hour before Alderete was shot. Police described the person as a man about 20 to 24 years old and approximately 5 feet 10 inches tall. He was shown wearing red shorts and a black hooded sweatshirt.
Crime Stoppers had also circulated information seeking the identity and location of a person connected with the case and offered a reward for information leading to a felony arrest. Police did not initially specify what role, if any, the person shown in the surveillance footage played in Alderete’s death, making the distinction between a person of interest and a charged suspect significant.
As investigators pursued that part of the case, Alderete’s family publicly described the confrontation as a devastating loss arising from a dispute over a basketball. His parents, Robert and Lisa Quinn, said Alderete was a father of eight who tried to keep peace among relatives and friends. One of his sons was present during the shooting but was not physically injured, according to the family.
Robert Quinn said his son was not confrontational and believed he would have surrendered the basketball rather than allow a disagreement to escalate. The family said Alderete had been preparing to start a new job. His mother said she continues to struggle with his absence while relying on faith and choosing forgiveness amid the criminal investigation.
Police said Friday that the person shown in the surveillance appeal had come forward. Authorities had not publicly disclosed whether investigators consider that person a witness, suspect or potential defendant, and no additional charge involving that individual had been announced. Hardeman’s murder case and the broader homicide investigation remain pending.
Author note: Last updated October 4, 2026.