A North Texas family is asking for the public's help in catching a killer.
Days after the slaying, Dallas police were looking for a dark-colored car seen leaving the site of the shooting.
But now, seven months later, police have not received any tips, leads or clues, despite a $35,000 reward.
"They are trying, but they need the general public to come forward," said Salas' uncle, Robert Thompson.
Thompson said his nephew's death is heart-wrenching.
"What happened to Robert is a tragedy and it was done by somebody also not in the right mind, but somebody I view as a coward," he said.
"She relives this every day, minute by minute, hour by hour," Thompson said. "It's still as fresh as it had happened less than five minutes ago."
Salas took care of his mother after his father died when he was 16 years old.
"She needs this, it's going to bring closure to her," Thompson said. "We're years away from her being able to have a full day without thinking about this."
Dec. 29 would have been Salas' 29th birthday.
Anyone with information is asked to call Crime Stoppers at 214-373-TIPS (8477) or 1-877-373-8477. All information is confidential.