>> Elise. Thank you. We'll look forward to that. Only on 13 tonight. The sister of a man killed by a Houston police officer last month wants that officer punished. She's speaking publicly tonight. One day after police released body cam and Dash cam video from that deadly encounter. ABC 13 s Luke Jones walked us through the video last night and spoke to the sister tonight. >> Police say the suspect was reaching for a weapon, but his sister says the video shows otherwise. She's calling for that officer to be fired and to face criminal charges. The officer tonight remaining on paid leave pending the outcome of an internal investigation or whatever, he didn't want to die. Her younger brother's picture in her lap. His ashes around her neck. Maribel Medrano is still digesting the police body camera video. Stop showing her brother's final moments. >> Watching it yesterday was the most difficult thing I think I've ever had to do. The night of August 7th, Edmundo Mesa had gone to this gas station a few blocks from his north Houston home, went down the street and purchased a drink and sat out there for a few minutes. >> His presence triggers a call to police. Two officers approach, and when they run, Mesa's name, they learn he has warrants. Warrants. I got warrants. >> Yeah. You got a few? For what? Yeah. And try arresting him. >> That's when they find out he has a gun. A struggle ensues, Mesa and the two officers falling to the ground. The officers hitting his arms and Officer Jill McGowan lodging her gun in Mesa's stomach. Keep them stop. And I will shoot you. >> Kill me! Don't do it, man. She could have tasered him. >> She could have done anything. They. I feel that they could have secured him and restrained him a lot in so many other ways than putting that gun on him. >> A gun McGowan eventually fired. Don't do it. >> Don't do it. Stop >> And then just because he says shoot me doesn't mean you go and shoot him. Does that, regardless of what he says, doesn't mean you go and do it. >> Police say Mesa had attempted to move his hands toward the pistol that was tucked in his waistband. That's not what Medrano sees. >> They have his hands like he is not going for his gun. He's not doing anything. >> And now she's demanding the officer who fired that fatal shot be held accountable. What does accountability look like to you. >> That she no longer gets to do this to anybody else? That nobody else. She's done this before, and it's not okay. >> In 2012, officer McGowan shot an unarmed man believing he was reaching for a gun. It turns out it was just a can of beer. >> He might have had a rap sheet or, you know, here and there did his time in and out of jail. But my brother was a good person. >> A twin who lost his own brother in 2002. Also at the hands of a Houston police officer. That brother allegedly waving a gun and ignoring commands to put it down. >> We're having to relive the same thing over again, over again. The exact same thing we're not supposed to. >> Deloitte or neither. >> Those last moments of his will forever be instilled in