Story highlights Tulsa police officer Betty Shelby has been charged with felony manslaughter in the first degree

She fatally shot 40-year-old Terence Crutcher after an encounter last week

(CNN) Tulsa, Oklahoma, police officer Betty Shelby has been charged with felony manslaughter in the first degree, Tulsa County District Attorney Steve Kunzweiler told reporters Thursday.

Shelby fatally shot 40-year-old Terence Crutcher after his SUV stopped in a roadway last week.

"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," Kurnzweiler said.

Betty Shelby

An arrest warrant was issued for Shelby and arrangements have been made for her surrender, he said. It was not clear when she would turn herself in.

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 Crutcher after he did not comply with her "lawful orders."

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