A former federal prosecutor said police in Austin, Texas, should be taking a closer look into the death of a Texas A&M University student who was found dead after a rivalry football game.

Brianna Aguilera, 19, was found dead at 12:47 a.m. on Saturday at 21 Rio Apartments in Austin after the Texas A&M University vs. University of Texas football game. Police in Austin said her death isn't being investigated as a homicide and said no foul play was suspected, but her mother, Stephanie Rodriguez, believes someone killed her. 

While she said detectives told her that Aguilera fell from a 17th floor balcony, and her death was accidental or a suicide, she doesn't believe that.

"This was not accidental. Someone killed my Brie and gave all the group of friends a lot of time to come up with the same story," Rodriguez the detective just disregarded them," Rodriguez said.

Rodriguez, who said her daughter was drinking that night, said she became suspicious after she saw her daughter's phone was on "Do Not Disturb," according to KGNS.

"No one reached out to me, I was the one who had to place several calls to Austin PD because I couldn’t locate her," Rodriguez said. "What was weird to me and skeptical was her phone was on Do Not Disturb. We always had this rule that if she was going to go out, she had to have her phone on ‘location on’ and answer her text to at least let me know she was OK. That stopped happening around 6 p.m."

Rodriguez told "Fox & Friends" on Wednesday: "They found my daughter's phone eventually in her friend's purse that was thrown in the woods."

Houston attorney Tony Buzbee announced Wednesday that the Buzbee Law Firm, along with the Gamez Law Firm, has been retained by Aguilera’s parents. Buzbee recently faced scrutiny for withdrawing as an attorney in an ongoing lawsuit against Sean "Diddy" Combs after it was revealed he is not admitted to practice in the federal jurisdiction where the case was filed.

"This is an unimaginable and very suspicious tragedy," Buzbee wrote in a social media announcement. "Brianna’s parents firmly believe there is much more information that needs to be discovered regarding their daughter’s death. They feel certain this was not an accident. This was certainly not a suicide. This family deserves straight answers. We hope we can help them get those answers."

The law firm said it will hold a news conference Friday at 1 p.m. in Houston to discuss the case. Both parents are expected to attend. Attorneys are also asking anyone with information about Aguilera’s whereabouts or activities on Nov. 28 to come forward.

Former federal prosecutor Neama Rahmani told Fox News Digital that Austin police should be giving Aguilera's death a "closer look," saying that some elements don't add up.

"Police should be giving this case a closer look," Rahmani said. "Either Brianna fell accidentally, she committed suicide, or this was a homicide. Any of them are possibilities."

"And the fact that there are reports that her phone was on Do Not Disturb, was in a friend's purse, and that purse was inside the woods, that's not typical or consistent with just an accident," he added.

Rodriguez told autopsy takes 90 days or longer.

Fox News Digital reached out to the Austin Police Department for comment.