An Oklahoma police officer has been charged with manslaughter for the fatal shooting of an unarmed black man, the Tulsa County District Attorney announced Thursday.

Officer Betty Shelby was charged with manslaughter in the first degree for the shooting of Terence Crutcher on Friday night, Tulsa County District Attorney Steve Kunzweiler said at a press conference Thursday.

Crutcher, 40, was shot and killed by a police officer as he approached his SUV with his arms raised late Friday after his car stalled in the middle of the road.  The incident was caught on police helicopter video.

Watch video recording of shooting here: https://youtu.be/YxfWXeAdiLE

Officers at the scene say Crutcher was acting erratically and was not following commands.

According to the affidavit, Shelby asked Crutcher if the vehicle was his and if it was disabled.

He was mumbling to himself and would not answer any of Officer Shelby’s questions. Mr. Crutcher kept putting his hands in his pockets and Officer Shelby kept telling him to show his hands. At that point, Mr. Crutcher began walking towards the abandoned vehicle with his hands held up and was not responding to any of Officer Shelby’s commands to stop,” the affidavit claims.

In the dash cam video, you see Crutcher walking away from an officer and toward his vehicle with his hands up.

The affidavit claims that Crutcher reached in the driver’s side window at that point, a claim that his family’s attorney denies.

Authorities later announced that Crutcher was unarmed and there was no weapon in his vehicle.

On Wednesday, the Tulsa County District Attorney called a news conference to discuss details related to the shooting.

The district attorney officially announced that Officer Betty Shelby will face a charge of felony first-degree manslaughter in Crutcher’s death.

Your affiant feels that Officer Shelby reacted unreasonably by escalating the situation from a confrontation with Mr. Crutcher, who was not responding to verbal commands and was walking away from her with his hands held up, becoming emotionally involved to the point that she over reacted. Although Mr. Crutcher was wearing baggy clothes, Officer Shelby was not able to see any weapons or bulges indicating [a] weapon was present,” the affidavit reads.

A warrant has been issued for Shelby’s arrest, and officials say they have been in contact with her attorney about her surrender.

Source: NBC News; K4.com