Protesters demand justice for Vanessa Guillen

Guillen’s parents were in Washington, D.C. this past week pushing for a congressional investigation into their daughter’s disappearance before joining protesters in Houston yesterday.
2:58 | 07/05/20

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Transcript for Protesters demand justice for Vanessa Guillen
protesters marching for Vanessa Guillen, her family believes that remains recently found in a shallow grave are hers. ABC's Stephanie Ramos has more on the protesters' demands. Reporter: Protesters demanded justice for Vanessa Guillen. Her family in Washington, D.C., pushing for a congressional investigation into her disappearance. Rushing back the Houston, Texas, to March for Saturday with the support of their hometown. Overnight, hundreds marching to Houston's city hall, demanding justice for army soldier Vanessa Guillen. Vanessa was last seen April 22nd just before noon outside of her barracks on one of the country's largest military installations. In ft. Hood. Vanessa her family said that she had been sexually harassed by a soldier before her disappearance. Now, they say a fellow soldier killed her. We need a congressional investigation. I'm not going to stay grieving in my room. She wants justice. Reporter: This week, investigators found unidentified human remains about 20 miles from the post. The army hasn't identified them. Guillen's family believes it was her. She was mutilated. Mutilated. We don't have a system in place that will provide for a woman like that to go and report. Reporter: 20-year-old army specialist Aaron Robinson was identified as the suspect in Guillen's case. Robinson died by suicide when authorities made contact with him on Wednesday. According to army's criminal investigation command. Authorities said Robinson's girlfriend 22-year-old Cecily Aguilar, told investigators he asked her to help Guillen's body. For months, Guillen's family claims the army did not take her disappearance seriously. What I was able to share was tampered by my responsibility to protect the investigation, so we could find Vanessa, prosecute those responsible for this travesty and in the end be in a position to punish them. And I don't -- I just wish I could have done a better job balancing those two needs. Reporter: The suspect Cecily Aguilar has her first court appearance tomorrow. Vanessa Guillen's family is also pushing legislation that would provide a third-party agency for soldiers who are victims of sexual harassment or assault. Instead of reporting to a colleague that's in the same unit. Stephanie, thank you so much. A case that has aroused so many strong feelings and shine some light on important issues. We'll continue to cover it.

This transcript has been automatically generated and may not be 100% accurate.

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