Dallas police have arrested a second man in Sunday's shooting death of a woman who was trying to sell her daughter's iPhone 7 in the Medieval Times parking lot.

Javan Jamal Bush

Javan Jamal Bush, 25, has been charged with capital murder. He was taken into custody Thursday at his home with the help of the U.S. Marshal Fugitive Apprehension Strike Team. Bail has been set at $500,000.

According to an arrest warrant affidavit, Bush and Lonzell Hunter, who has also been charged with capital murder, met with Martha Teran, who was with her daughter and son, in the parking lot in the 2000 block of North Stemmons Freeway.

Teran planned to sell Hunter a phone she'd advertised on the "Offer Up" smartphone app.

Instead, Hunter took the phone from Teran and shot her, the affidavit says.

Police responded to the shooting call about 6 p.m. and found Teran, 42, with a gunshot wound in her stomach. She was taken to Parkland Memorial Hospital, where she was pronounced dead.

Martha Teran, 42

The shooting happened within seconds, according to WFAA-TV (Channel 8), and Teran's son and daughter witnessed the slaying.

A witness saw Bush drive away in a white Infiniti and provided information that police used to trace the vehicle to the suspect, the affidavit said. Bush was initially brought in for questioning and released.

Police obtained a warrant for Bush's cellphone and found that he had been in contact with Hunter, 22, and that the two were in the area at the time of the killing. Police also found texts indicating that Bush was unhappy with his cut of the deal.

Lonzell Hunter faces a capital murder charge in the shooting death of Martha Teran.

Hunter, 22, was arrested Wednesday on a charge of capital murder. He remains in Dallas County Jail in lieu of $500,000 bail.

According to Teran's Facebook page, she was a real estate associate with Gilchrist & Co. Real Estate.

Teran's family set up a GoFundMe page to raise money for funeral costs. Greg Ramon, the creator of the page, said the Teran family is heartbroken about the loss of someone who brought so much joy to their family.