The mysterious death of Texas A&M student Brianna Aguilera has been ruled a suicide, police said, noting a suicide note found on her phone and reported previous comments about self-harm.

The investigation began at 12:46 a.m. Saturday when officers responded to an Austin apartment complex and found Aguilera on the ground with trauma from an apparent fall from a high floor, Austin Police Detective Robert Marshall said.

Cameras showed Aguilera arriving at the apartment complex just after 11 p.m. Friday and going to an apartment on the 17th floor, Marshall said at a news conference on Thursday. The video showed “a large group of friends left that same apartment at 12:30 a.m. on Nov. 29, leaving just Brianna and three other girls in the apartment,” he said.

Brianna Aguilera is shown in this undated file photo.

Earlier on Friday, Aguilera was at a tailgate for the Texas A&M vs. University of Texas football game, and she “became intoxicated to a point where she was asked to leave,” Marshall said.

Aguilera told her friends that she lost her phone, and when they arrived at the apartment Friday night, she borrowed a phone to call her boyfriend, he said.

Witnesses heard her argue on the phone with her boyfriend, Marshall said. That phone call took place from 12:43 a.m. to 12:44 am — two minutes before a 911 call, he said.

When police later found Aguilera’s lost phone, they recovered a “deleted digital suicide note dated Tuesday, Nov. 25 of this year, which was written to specific people in her life,” Marshall said.

“Brianna had made suicidal comments previously to friends, back in October of this year,” he said. “This continued through the evening of her death, with some self-harming actions early in the evening and a text message to another friend indicating the thought of suicide.”

No evidence in the investigation ever pointed to a crime, Marshall stressed, adding, “Every friend and witness during this investigation has been nothing but forthcoming and open.”

Aguilera’s family told local media earlier this week the beloved college student was not suicidal and was planning to pursue a career in law.

After Thursday’s police news conference, family attorney Tony Buzbee maintained that the “circumstances surrounding her death are very suspicious.”

“The Austin Police Department’s handling of this matter creates more questions than it provides answers,” Buzbee said in a statement. “As far as we are concerned, this is an open investigation and will continue to be open until these parents are satisfied they know what happened to their daughter.”

Austin Police Chief Lisa Davis said at the news conference, “I understand how grief and the need for answers can raise intense emotions and many questions. But sometimes the truth doesn’t provide the answers we are hoping for, and that is this case.”

Davis said her “heart aches” for Aguilera’s parents.

“I have three daughters and a son, and I cannot begin to imagine the pain,” Davis said.