HEMPSTEAD, Texas -- The autopsy of a black woman who was found dead in a Texas jail revealed no injuries that would suggest she was killed by someone else, authorities said Thursday.
Waller County prosecutor Warren Diepraam said the autopsy showed that Sandra Bland, 28, had no defensive injuries on her hands that would typically indicate a struggle.
Some cuts or scrapes were found on her wrists, which were said to be consistent with a struggle while being handcuffed. The marks around Bland's neck were consistent with a suicide, Diepraam said.
Bland was arrested in a traffic stop three days before she was found hanging in her jail cell July 13. Her family and friends dispute the official finding that she killed herself.
Texas Rangers and the FBI are investigating.
Also Thursday, the woman's sister confirmed that Bland had taken prescription medication for seizures in the past.
Booking documents filled out for Bland after her arrest indicate she told staff members at the jail that she had epilepsy and was taking medication for it. Other forms, however, say she was not taking medication.
Sharon Cooper said her sister suffered from seizures about a decade ago but had not had any in recent years and was not on medication.
One jail-intake questionnaire says Bland took pills in 2015 in an attempt to kill herself after losing a baby. A separate form filled out by another jail employee says the suicide attempt occurred in 2014.
Cooper said her sister had a miscarriage in May 2014 but got through it. Cooper also said she was not aware of any suicide attempt.
Preliminary autopsy results also showed that Bland had marijuana in her system and about 30 cuts on her wrist that were probably self-inflicted in the weeks before her arrest.
The drug-test results are worth noting because they could be "relevant to her state of mind," Diepraam said.
Authorities said any contradictions in the jail documents were the result of Bland's inconsistent answers to jail officials' questions about suicide attempts or medication.
One form indicates Bland had suicidal thoughts within the past year. Another says that's not the case.
Some of the documents indicate Bland also told jail officials she was taking the anti-epileptic drug Keppra. On another that contains Bland's signature, "no" is circled by the question asking if she's currently on any medication.
Waller County Sheriff Glenn Smith released a statement Thursday saying the guards who evaluated Bland determined she wasn't suicidal when she was booked into the jail July 10.
Smith said he's forming a task force to review jail procedures, evaluate personnel and study other relevant issues.
Bland's death comes after nearly a year of heightened national scrutiny of police and their dealings with black suspects, especially those who have been killed by officers or died in police custody.
Bland's family has said she was not despondent and was looking forward to starting a new job at her alma mater, Prairie View A&M University.
However, Bland posted a video to her Facebook page in March, saying she was suffering from "a little bit of depression as well as PTSD," or post-traumatic stress disorder. At least one friend has said she was just venting after a bad day.
A video of her arrest taken from the officer's dashboard camera shows state Trooper Brian Encinia drawing a stun gun and threatening Bland when she refuses to follow his orders.
The roadside exchange began when the trooper stopped Bland for failing to signal a lane change.
In the video, the conversation turns hostile when the officer asks Bland to put out her cigarette and she asks why she can't smoke in her own car. The trooper then orders Bland to get out of the vehicle. She refuses, and he tells her she is under arrest.
After further refusals to get out of the car, the trooper threatens to drag her out. He then pulls out a stun gun, saying, "I will light you up."
Houston television station KTRK-TV released a voice mail that Bland left a friend, LaVaughn Mosley, while in jail in which she expressed disbelief at her circumstances.
In the message, Bland calmly said she was "still just at a loss for words honestly at this whole process." She wondered, "How did switching lanes with no signal turn into all of this?"
The Department of Public Safety trooper, who has been on the force for just over a year, has been placed on administrative leave for violating unspecified police procedures and the department's courtesy policy, officials said.
Information for this article was contributed by staff members of The Associated Press.
A Section on 07/24/2015