Tulsa police officer Betty Shelby was booked at the local county jail early Friday and released shortly after on $50,000 bond.
Shelby has been charged with manslaughter in the fatal shooting of Terence Crutcher, 40, after his SUV broke down last week.
The criminal complaint against Shelby said her “fear resulted in her unreasonable actions which led her to shooting” Crutcher. She is accused of “unlawfully and unnecessarily” shooting him after he did not comply with her “lawful orders.”
“We reviewed the facts of the allegations. It is our responsibility to determine if the filing of a criminal charge is justified under the law,” Tulsa County District Attorney Steve Kunzweiler said.
Attorneys for Crutcher’s family said they were “happy charges have been brought” against the officer and they will be seeking a “vigorous prosecution” of this case that results in a conviction.
The attorneys also expressed gratitude to the Tulsa Police Department.
“Today, we are thankful to TPD, we are thankful to (police) Chief (Chuck) Jordan for providing information to the District Attorney’s office, and we are happy that charges were brought,” attorney Damario Solomon-Simmons said during a news conference.
“This is a small victory,” Crutcher’s twin sister Tiffany told reporters.
“The chain breaks here. We’re going to break the chains of police brutality,” she added. “We know the history.”
The possible penalty for conviction on first-degree manslaughter in Oklahoma is four years to life, according to Susan Witt, the public information officer for the district attorney’s office.
CNN reached out to Scott Wood, the attorney for Shelby, but has not received a response.
Earlier this week, Wood said his client thought Crutcher was behaving strangely and ignored her commands, and that she was afraid that he might be reaching for a weapon.
Multiple police cameras, including ones mounted in squad cars and in a helicopter, captured the Crutcher shooting on tape. In the video, Crutcher can be seen with his hands raised above his head prior to his death. He walks away from Shelby towards his car.
None of the videos showed whether the vehicle window was open or closed.
There was no weapon found in the car.
Activists planned a rally Thursday night in Tulsa. In a tweet the group WethePeopleOkalhoma said, “There is still work to be done.”
“There is currently no credible information that any of the gatherings, protests, or rallies will be anything other than peaceful,” according to a statement on the Tusla Police Department Facebook page.
The department was aware of several demonstrations in the Tulsa area, it said.
It all started after a 911 call Friday from a woman said an abandoned car was blocking the street and a man was running away. The man warned that it was going to blow up, the caller said.
Shelby was the first officer to arrive on the scene, though she was not responding to the 911 call. Her attorney said she was on her way to a domestic violence call when she saw Crutcher.
CNN’s Samira Said and Catherine E. Shoichet contributed to this report.