San Antonio police have arrested a man in a deadly shooting at a downtown park. Court records say it started with a basketball.

Isean Hardeman, 23, is charged with one count of murder. Records show it is a first degree felony. In Texas that can mean 5 to 99 years or life in prison. His bond is set at $250,000.

The man who died was Jonathan Alderete. He was 35.

Officers got a call about a shooting just before 5 a.m. on Sunday, Aug. 30. They went to the 600 block of Hemisfair Plaza Way. That is near South Alamo Street in downtown San Antonio. The spot sits by the new basketball court at Hemisfair.

Police found Alderete shot. He was taken to a hospital. He died there, police said.

For days, no one knew who the shooter was. Police said Alderete and an unknown man had a fight over property. Then the man shot him and ran off. Police did not put out a description of the suspect.

The break came from video, the arrest affidavit says.

Cameras caught the whole thing, records allege. The video showed Hardeman and three other men taking a basketball. The ball belonged to Alderete, the affidavit says. Alderete and Hardeman then got into a fight. During that fight, Hardeman shot Alderete and killed him, records allege.

The affidavit says it is still not clear what set off the fight.

The same video tracked how the shooter got away, records say. He took off on an electric scooter. Then he dumped it. He ran past a hotel downtown. Then he got on a VIA bus. VIA runs the city bus system in San Antonio.

Police put a name to the face two days later. They found Hardeman at an apartment on the South Side, the affidavit says.

The court is brand new. It is called the Red McCombs Community Court. It sits at Tower Park at Hemisfair. It cost $1.8 million. It opened in September 2025.

The Spurs, the McCombs family and Hemisfair built it as a team. It was billed as the first basketball court in the district open to anyone.

That is part of why this one stings. Hemisfair is where families walk on weekends. The court was built so kids and grown men could play for free. Now it is a crime scene in a murder case.

Alderete's family and friends held a vigil for him. They let go of red balloons in his memory. His family said he loved the game. They said basketball was how he brought people together.

Hardeman sits in jail on the murder charge. He would have to post the $250,000 bond to get out while the case moves ahead.

Nothing has gone to trial. No court has heard the evidence yet.

Police have not said if anyone else will be charged. The affidavit says three other men were there when the ball was taken. It calls them suspects. Records do not show charges against them.

The first call to 911 was for a shooting in progress. Officers were sent out before dawn. In the days after, police said the case was still open and no one was in custody. That changed with the arrest.

Police first called it a fight over property. The affidavit later put a name to that property. It was a basketball.

For now, the case sits with the Bexar County courts. The affidavit is the state's side of the story. It has not been tested in court.

A charge is not proof. Everyone is innocent until a court says otherwise.