Who killed Leonardo Ortega?
It's a question his family thought they had an answer to when two men were arrested for his June 14, 2015 murder.
Ortega was working at a Subway restaurant in Dallas when he was fatally shot after police say he refused to comply with three armed robbers.
"It was kind of a moment of happiness. Somebody who has done something so senseless, they're off the street," said Vanessa Ortega, Leonardo's sister. "Now they can't do that to anybody else, but that wasn't the case."
A few months after the arrests, the investigation unraveled.
The two men charged with Ortega's murder were set free.
The lead detective was removed from the case.
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His killer remains on the loose.
"It was like we had to start all over again. There is still someone out there sleeping just fine without being prosecuted," Vanessa Ortega said.
The family said a new detective has been assigned to the case, but they have been unable to contact that person.
Though she's frustrated that the case has gone cold, Vanessa refuses to be angry because Leonardo wouldn't want her to be.
"I have a purpose to fulfill, as well as everybody else" she said. "Nobody should hold on to anger. That person who is still out there, their time will come."
