Sandra Bland left a voicemail on a friend's phone from inside jail before she died, it has emerged.
The 28-year-old called a friend from inside the Waller County Jail in Texas after she was arrested on July 10 during a routine traffic stop. She was found dead inside her cell from an apparent suicide on July 13.
"I'm still just at a loss for words, honestly, about this whole process," she said in the voicemail message. "How did switching lanes with no signal turn into all of this?"
She left the 22-second message after making her initial court appearance on July 10, according to reports.
Her death was ruled a suicide - but her family have said she would never have taken her own life.
But it has now emerged that two jailers interviewed Bland after her arrest on July 10 and she said she had previously tried to take her life after losing a child.
She told the second jailer that she was not depressed but was upset about her arrest.
Both jailers said she appeared to be fine at the time, the Waller County Sheriff told the Associated Press.
But a lawyer for her family said they had no evidence that she had ever tried to take her life - and the jail documents contain some discrepancies.
In one questionnaire, she said she took pills earlier this year to try to kill herself after losing a baby - but another said the incident unfolded last year. In one form, she says she had suicidal thoughts within the past year but in another, she says that isn’t the case.
Waller County District Attorney Elton Mathis told CNN that the medical examiner had reported “cutting scars” on Bland’s arm.
And in March, Bland posted a video to her Facebook page saying she was suffering from "a little bit of depression as well as PTSD” - but friends say she was just venting.
State Senator Royce West said the information on her forms should have led jailers to put her on a suicide watch.
On Tuesday, Texas authorities released dash cam footage of her arrest during a routine traffic stop. It shows a trooper ordering her out of the car and threatening her with a Taser after she refused to put out her cigarette.
Bland's family members said it showed she should never have been arrested.
"I'm infuriated and everybody else should be infuriated," her sister, Sharon Cooper, told reporters.
The FBI and Texas authorities are investigating.
Watch Below: Trooper Threatens Sandra Bland with Taser During Traffic Stop