SAN ANTONIO – A San Antonio mother is demanding answers after learning the man charged in her son’s killing will not be prosecuted, following a grand jury finding that there was not enough evidence to move forward.

Edward Trejo, 28, was shot to death last December along Cincinnati Avenue on the city’s West Side.

A suspect was arrested and charged with murder, but Trejo’s family learned the district attorney’s office would follow the grand jury’s decision not to indict.

Less than four months after Trejo’s death, the district attorney’s office is dropping the case against 41-year-old Paul Flores, who was accused of shooting and killing Trejo, also known as Edward “Fatso” Trejo. Flores has claimed he shot Trejo in self-defense.

Trejo’s mother, Andrea, said the decision has left the family confused and upset.

“It’s a nightmare. I don’t wish this pain on anyone,” Andrea said.

She said she believes the grand jury did not review everything before making its decision and questioned why the case was not pursued despite what she described as multiple witnesses.

“Show me, show the world, show them what you feel and what evidence you had when you have all these witnesses, at least six from the party that say otherwise,” she said.

Andrea said she was told a week ago that the district attorney would be reviewing the case.

“She says, Well, I’m going over your son’s case. I just got it. I only have a week or two a week to get this to them. I have 90 days, and it’s the 80-something day,” she said.

Now, she said, her family has to accept that the man accused of shooting her son will not face prosecution.

“It was an injustice for my son. The DA did an injustice for my son,” she said.

Asked to explain the decision, the district attorney’s office declined an on-camera interview and instead emailed a statement saying it is following the grand jury’s decision. “This grand jury did not find probable cause to believe an offense occurred,” the statement said.

The office also addressed the family’s reaction, writing: “We understand that this outcome is disappointing to Edward’s family, and we truly empathize with them on how difficult this news is.”

Andrea said her family does not want sympathy.

“I was not given anything throughout these three months, I was hoping a detective would reach out to me. I would get some type, some type of assistance…but no, I got a call a week ago, and now all of a sudden, my son’s killer is free,” she said.

The district attorney’s office said the case could be refiled in the future if new evidence is discovered.