HEMPSTEAD, Texas (WLS) -- The Texas Department of Public Safety says it has found "violations" by police during the arrest of Sandra Bland, whose death in a Texas jail was ruled a suicide Thursday.
Officials say the officer involved has been assigned to "administrative duties" while the investigation continues.
"We have identified violations of the department's procedures regarding traffic stops and the department's courtesy policy," the department said in a statement.
The department as well as the District Attorney have also requested FBI forensic analysis of the arrest video.
Following the death of Bland - a Naperville, Ill. native - more than 100 protestors in Hempstead, Texas, marched from the city's jail to the courthouse demanding answers Friday.
Texas authorities on Thursday ruled her death in a Texas jail a suicide by hanging.
"It's like, questionable, because of the traffic stop, all of this happened, really? It just brings so many questions," said Troinee Broom, a protestor.
Investigators claim Bland became combative after police pulled her over for improper lane usage. During the arrest, which was captured on cellphone video, you can hear Bland complaining that police slammed her head to the ground.
"You just slammed my head into the ground. Do you not care about that?" Bland said in the video.
A Texas state senator is now calling for the release of the police dashcam video of the incident.
The ABC7 I-Team also found a video that Bland posted on the Internet five months ago.
"I am suffering from something that some of you all may be dealing with right now. It's a little bit of depression as well as PTSD," she says in the video.
Bland's family members, however, say that she gave no indication that she might harm herself.
'Violations' found during arrest of Sandra Bland, officials say