The remains discovered in a Texas field have been confirmed as those of 19-year-old Camila Mendoza Olmos, who disappeared on Christmas Eve, officials announced on Wednesday.

Her body was located on Tuesday during a search approximately 100 yards away from her residence.

According to the Bexar County Sheriff’s Office, the medical examiner concluded that Olmos died from a gunshot wound to the head, classifying her death as a suicide.

Sheriff Javier Salazar reported that a firearm was found at the location where Olmos was discovered. He mentioned that a gun owned by one of her relatives is missing. However, authorities have not yet confirmed whether the weapon found at the scene is the same as the missing one.

Salazar noted that investigators were considering the possibility of “fear of self-harm” in relation to her disappearance, highlighting some signs of suicidal thoughts and undiagnosed depression.

“From descriptions provided to us, it seems this was a young individual facing significant challenges in their life,” he commented.

Mendoza Olmos grew up in Southern California and still has close family ties. She was born in Ontario and went to elementary school there.

Dashboard camera video released this week may show Mendoza Olmos right when she went missing. Investigators believe footage shows the college student walking near her home the morning she disappeared.

Mendoza Olmos was seen on surveillance video rummaging through her car Christmas Eve morning, then walking out of sight.

Her family said she left without her phone.

If you are struggling with thoughts of suicide, or worried about a friend or loved one, help is available. Call the National Suicide Prevention Lifeline at 1-800-273-8255 [TALK], or text TALK to 741-741 for free confidential emotional support 24 hours a day 7 days a week.

ABC News contributed to this report.